ASTROSAT CZTI

Data Quality Report

Orbit 56197

Creation date: 2026-02-16T11:38:22.061996
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_083T04_9000006550_56197cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56197cztM0_level2_quad_clean.evt
Size (bytes)686,312,64085,311,360
Size654.5 MB 81.4 MB
Events in quadrant A10,352,913371,489
Events in quadrant B3,326,678674,902
Events in quadrant C5,624,780540,985
Events in quadrant D5,577,019525,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0354543
B0146932
C0214872
D0213612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6748284542.160640%
B67481462.163604%
C674885012.596325%
D67486419.499111%

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 7598 6748 2665 2665 35.08% 39.49%
B 7598 6748 24 24 0.32% 0.36%
C 7598 6748 608 608 8.00% 9.01%
D 7598 6749 520 520 6.84% 7.70%

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 12 115 5896264 42416.45 558 545 139.0
A 15 32 970392 6977.51 558 545 139.0
A 8 176 428938 3082.05 558 545 139.0
B 5 185 135126 862.92 717 690 155.8
B 0 213 56416 357.69 717 690 155.8
B 0 63 46589 294.62 717 690 155.8
C 12 254 2362898 12790.85 673 665 184.7
C 12 252 285418 1541.86 673 665 184.7
C 15 234 112227 604.08 673 665 184.7
D 11 129 937764 4950.8 676 643 189.3
D 13 153 730822 3857.53 676 643 189.3
D 8 240 528347 2787.85 676 643 189.3

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