ASTROSAT CZTI

Data Quality Report

Orbit 57974

Creation date: 2026-06-15T23:07:31.003169
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_031T01_9000006584_57974cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57974cztM0_level2_quad_clean.evt
Size (bytes)473,362,56092,499,840
Size451.4 MB 88.2 MB
Events in quadrant A2,826,475631,697
Events in quadrant B3,242,990668,509
Events in quadrant C6,244,260523,586
Events in quadrant D4,726,837544,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128591
B0138601
C0228152
D0181751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199530.854977%
B62001472.370968%
C619998215.841265%
D61992734.403936%

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 7374 6200 6 6 0.08% 0.10%
B 7375 6200 70 70 0.95% 1.13%
C 7374 6199 832 832 11.28% 13.42%
D 7374 6199 290 290 3.93% 4.68%

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 4 236 39829 226.52 701 682 172.8
A 13 248 33004 187.03 701 682 172.8
A 3 14 13554 74.48 701 682 172.8
B 5 172 201796 1368.54 685 659 147.0
B 6 51 91828 620.31 685 659 147.0
B 10 247 36893 246.53 685 659 147.0
C 15 224 2930324 17043.34 626 621 171.9
C 6 223 652334 3791.29 626 621 171.9
C 12 252 93232 538.76 626 621 171.9
D 12 110 1330476 7112.25 659 631 187.0
D 12 251 193002 1028.83 659 631 187.0
D 8 240 127691 679.54 659 631 187.0

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