ASTROSAT CZTI

Data Quality Report

Orbit 34807

Creation date: 2022-03-07T00:04:23.465445
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/AS1C07_004T01_9000004990_34807cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34807cztM0_level2_quad_clean.evt
Size (bytes)1,006,793,280161,648,640
Size960.2 MB 154.2 MB
Events in quadrant A5,750,6281,039,119
Events in quadrant B6,663,3931,043,242
Events in quadrant C6,663,3871,049,035
Events in quadrant D10,613,972944,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246553
B0273553
C0271683
D0397233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11848280.236327%
B118482311.949696%
C118481481.249156%
D118488717.351452%

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 15817 11851 8 8 0.05% 0.07%
B 15817 11851 149 149 0.94% 1.26%
C 15817 11851 114 114 0.72% 0.96%
D 15817 11851 796 796 5.03% 6.72%

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 291515 1059.53 1370 1344 273.9
A 10 83 84849 304.91 1370 1344 273.9
A 7 16 53512 190.49 1370 1344 273.9
B 5 172 854570 3276.24 1360 1322 260.4
B 5 255 227579 868.77 1360 1322 260.4
B 4 232 119268 452.88 1360 1322 260.4
C 15 214 534218 1725.58 1330 1341 308.8
C 0 207 440515 1422.15 1330 1341 308.8
C 14 67 347517 1121.0 1330 1341 308.8
D 8 195 2197331 6934.74 1295 1259 316.7
D 2 249 1768100 5579.31 1295 1259 316.7
D 10 118 634534 1999.75 1295 1259 316.7

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