ASTROSAT CZTI

Data Quality Report

Orbit 58373

Creation date: 2026-07-12T20:11:56.343385
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_045T01_9000006590_58373cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58373cztM0_level2_quad_clean.evt
Size (bytes)510,834,240110,108,160
Size487.2 MB 105.0 MB
Events in quadrant A4,018,365725,877
Events in quadrant B5,594,760730,517
Events in quadrant C4,389,816691,585
Events in quadrant D4,313,679654,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172520
B0218740
C0183690
D0176920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76311051.375966%
B76326618.660901%
C76321542.017820%
D7632580.759958%

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 7631 7631 80 80 1.05% 1.05%
B 7631 7631 402 402 5.27% 5.27%
C 7632 7632 150 150 1.97% 1.97%
D 7632 7632 53 53 0.69% 0.69%

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 80 273079 1278.21 855 832 213.0
A 4 249 119668 557.94 855 832 213.0
A 13 248 87697 407.83 855 832 213.0
B 2 249 1397821 7853.05 820 788 177.9
B 10 128 215889 1209.13 820 788 177.9
B 10 247 115009 642.06 820 788 177.9
C 15 148 363529 1592.21 824 818 227.8
C 13 16 283288 1239.97 824 818 227.8
C 6 223 125783 548.56 824 818 227.8
D 11 129 318938 1336.84 831 793 238.0
D 12 128 179801 752.19 831 793 238.0
D 3 12 129054 538.95 831 793 238.0

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