ASTROSAT CZTI

Data Quality Report

Orbit 56711

Creation date: 2026-03-23T00:13:15.436229
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_083T06_9000006558_56711cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56711cztM0_level2_quad_clean.evt
Size (bytes)476,608,32083,606,400
Size454.5 MB 79.7 MB
Events in quadrant A4,083,404555,497
Events in quadrant B5,364,748540,839
Events in quadrant C4,236,648515,041
Events in quadrant D3,491,139500,808

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164361
B0200371
C0170341
D0149081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60003475.783333%
B600090015.000000%
C60004076.783333%
D60012073.449425%

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 7145 6001 275 275 3.85% 4.58%
B 7145 6001 726 726 10.16% 12.10%
C 7145 6001 358 358 5.01% 5.97%
D 7146 6002 190 190 2.66% 3.17%

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 62 988512 6417.12 620 604 153.9
A 8 26 270688 1754.38 620 604 153.9
A 10 251 184061 1191.68 620 604 153.9
B 5 185 2740651 21473.95 596 575 127.6
B 10 247 135901 1060.55 596 575 127.6
B 0 213 33720 259.76 596 575 127.6
C 13 3 1699256 10548.02 586 579 161.0
C 9 38 69623 428.73 586 579 161.0
C 12 252 55416 340.51 586 579 161.0
D 2 249 655911 3886.68 596 569 168.6
D 11 129 179754 1062.7 596 569 168.6
D 8 240 55225 324.15 596 569 168.6

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