ASTROSAT CZTI

Data Quality Report

Orbit 54923

Creation date: 2025-11-22T16:56:58.218415
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/AS1A14_014T01_9000006528_54923cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54923cztM0_level2_quad_clean.evt
Size (bytes)494,864,64095,103,360
Size471.9 MB 90.7 MB
Events in quadrant A3,638,336636,078
Events in quadrant B3,117,546689,532
Events in quadrant C6,971,003540,949
Events in quadrant D4,088,449561,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153072
B01359811
C02521645
D01652718

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64811001.542972%
B6475681.050193%
C6472104716.177379%
D64751842.841699%

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 7606 6482 37 37 0.49% 0.57%
B 7606 6479 3 3 0.04% 0.05%
C 7606 6477 878 878 11.54% 13.56%
D 7606 6480 139 139 1.83% 2.15%

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 3 14 597217 3361.12 711 693 177.5
A 3 45 187965 1055.19 711 693 177.5
A 0 8 24223 132.58 711 693 177.5
B 5 172 207842 1398.92 700 678 148.1
B 5 236 86855 581.93 700 678 148.1
B 12 111 18057 117.36 700 678 148.1
C 4 5 3564100 19978.65 644 638 178.4
C 12 252 455038 2547.61 644 638 178.4
C 13 3 168809 942.86 644 638 178.4
D 6 239 251775 1294.5 680 649 194.0
D 11 129 218526 1123.11 680 649 194.0
D 15 94 184019 945.23 680 649 194.0

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