ASTROSAT CZTI

Data Quality Report

Orbit 58222

Creation date: 2026-07-02T15:44:57.352450
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_044T03_9000006588_58222cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58222cztM0_level2_quad_clean.evt
Size (bytes)424,722,24096,569,280
Size405.0 MB 92.1 MB
Events in quadrant A3,178,007639,324
Events in quadrant B5,337,462658,578
Events in quadrant C2,957,514611,370
Events in quadrant D3,752,222569,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138391
B0201731
C0135171
D0154131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63821602.507051%
B63835779.039637%
C63831322.067993%
D63831832.866990%

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 7517 6382 65 65 0.86% 1.02%
B 7518 6383 379 379 5.04% 5.94%
C 7518 6383 52 52 0.69% 0.81%
D 7518 6383 108 108 1.44% 1.69%

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 7 64 119474 661.18 730 711 179.6
A 13 248 100554 555.85 730 711 179.6
A 10 251 74665 411.72 730 711 179.6
B 2 249 1251337 8511.62 696 671 146.9
B 10 128 904776 6153.04 696 671 146.9
B 5 185 171706 1164.01 696 671 146.9
C 6 223 188006 981.79 697 690 190.8
C 12 252 29133 149.08 697 690 190.8
C 11 244 9388 45.59 697 690 190.8
D 7 222 236692 1210.73 699 672 194.9
D 8 240 119714 610.66 699 672 194.9
D 8 160 108639 553.85 699 672 194.9

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