ASTROSAT CZTI

Data Quality Report

Orbit 20211011_A10_057T03_9000004722_level2

Creation date: 2021-10-21T18:09:35.072838
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/AS1A10_057T03_9000004722cztM0_level2_bc.evt modeM0/AS1A10_057T03_9000004722cztM0_level2_quad_clean.evt
Size (bytes)8,975,113,9201,354,046,400
Size8.4 GB 1.3 GB
Events in quadrant A48,954,8177,971,629
Events in quadrant B64,050,9378,212,243
Events in quadrant C46,107,9958,121,082
Events in quadrant D104,745,3698,659,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03411540
B03756900
C03307400
D05928090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04710
D05350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023200
B023180
C023180
D026400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1134221157010.200843%
B1133611243010.964970%
C11331197308.586986%
D1289133669128.461831%

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 209260 113336 1137 1137 0.54% 1.00%
B 209199 113361 2390 2390 1.14% 2.11%
C 209106 113266 587 587 0.28% 0.52%
D 231112 128904 2983 2983 1.29% 2.31%

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 15 249 18110225 14400.24 5796 5715 1257.2
A 1 39 3992882 3171.37 5796 5715 1257.2
A 0 253 1456562 1154.0 5796 5715 1257.2
B 3 43 15368950 13255.77 5864 5734 1159.0
B 3 26 6472247 5579.47 5864 5734 1159.0
B 0 219 4208048 3625.86 5864 5734 1159.0
C 8 35 5772323 4409.83 5682 5624 1307.7
C 0 10 4353452 3324.81 5682 5624 1307.7
C 9 236 3164516 2415.62 5682 5624 1307.7
D 7 38 18931392 14138.59 5717 5591 1338.6
D 8 195 10181296 7601.8 5717 5591 1338.6
D 7 80 9844942 7350.53 5717 5591 1338.6

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