ASTROSAT CZTI

Data Quality Report

Orbit 20210525_A10_058T03_9000004408_level2

Creation date: 2025-12-26T03:20:22.792126
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_058T03_9000004408cztM0_level2.fits modeM0/AS1A10_058T03_9000004408cztM0_level2_quad_clean.evt
Size (bytes)878,834,880700,424,640
Size838.1 MB 668.0 MB
Events in quadrant A5,637,8684,200,466
Events in quadrant B5,237,5344,122,839
Events in quadrant C5,117,7743,450,665
Events in quadrant D4,677,2783,495,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01871030
B02668400
C02059490
D02915500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017700
B017700
C017700
D017700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8663312721.468263%
B8663322532.600626%
C866331025011.831519%
D8663332613.764155%

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 98633 86633 0 0 0.00% 0.00%
B 98633 86632 0 0 0.00% 0.00%
C 98633 86529 0 0 0.00% 0.00%
D 98633 86606 0 0 0.00% 0.00%

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 0 29 4586 9.01 1468 1385 355.1
A 7 110 4363 8.39 1468 1385 355.1
A 14 95 4109 7.67 1468 1385 355.1
B 2 9 4095 10.24 1386 1329 270.1
B 3 80 3484 7.98 1386 1329 270.1
B 5 232 3433 7.79 1386 1329 270.1
C 1 80 3866 7.68 1353 1270 338.2
C 1 81 3824 7.55 1353 1270 338.2
C 12 241 3565 6.79 1353 1270 338.2
D 15 46 3487 6.39 1338 1220 354.9
D 10 189 3286 5.82 1338 1220 354.9
D 3 14 3274 5.79 1338 1220 354.9

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