ASTROSAT CZTI

Data Quality Report

Orbit 20220112_A06_003T04_9000004866_level2

Creation date: 2022-01-17T21:15:08.348816
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A06_003T04_9000004866cztM0_level2_bc.evt modeM0/AS1A06_003T04_9000004866cztM0_level2_quad_clean.evt
Size (bytes)12,688,660,8002,149,462,080
Size11.8 GB 2.0 GB
Events in quadrant A79,006,92613,116,860
Events in quadrant B125,468,98012,724,825
Events in quadrant C69,272,41514,102,637
Events in quadrant D98,555,22813,042,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06660
B06660
C06660
D06660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05885190
B07462410
C04647300
D05898350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036060
B036040
C036100
D036080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1765642854216.165243%
B1764854829627.365498%
C17653741352.342285%
D176433160319.086169%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 244413 176653 236 236 0.10% 0.13%
B 244412 176567 4877 4877 2.00% 2.76%
C 244413 176623 709 709 0.29% 0.40%
D 244413 176511 3351 3351 1.37% 1.90%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 44314119 23360.13 8719 8593 1896.6
A 10 83 345209 177.48 8719 8593 1896.6
A 13 6 323273 165.92 8719 8593 1896.6
B 5 31 46063216 27617.64 8521 8357 1667.6
B 5 15 21251421 12738.79 8521 8357 1667.6
B 5 172 14915431 8939.3 8521 8357 1667.6
C 3 233 9403207 4553.2 9139 9092 2063.2
C 0 10 9027814 4371.25 9139 9092 2063.2
C 15 214 7617476 3687.68 9139 9092 2063.2
D 8 195 19454191 8945.76 8989 8727 2173.7
D 2 249 9820913 4514.03 8989 8727 2173.7
D 8 230 6686959 3072.28 8989 8727 2173.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter