ASTROSAT CZTI

Data Quality Report

Orbit 54972

Creation date: 2025-11-26T01:07:58.500533
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_014T01_9000006528_54972cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54972cztM0_level2_quad_clean.evt
Size (bytes)1,024,156,80092,312,640
Size976.7 MB 88.0 MB
Events in quadrant A5,276,381716,687
Events in quadrant B3,698,316818,883
Events in quadrant C8,132,786598,832
Events in quadrant D20,176,44997,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214411
B0170590
C0299140
D0654040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80895296.539745%
B8090200.247219%
C8090166120.531520%
D8090711987.997528%

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 8089 8089 458 458 5.66% 5.66%
B 8090 8090 5 5 0.06% 0.06%
C 8090 8090 1178 1178 14.56% 14.56%
D 8090 8090 6893 6893 85.20% 85.20%

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 15 32 1332500 6176.62 870 845 215.6
A 4 249 164378 758.52 870 845 215.6
A 13 248 143329 660.88 870 845 215.6
B 0 182 74855 384.89 881 849 192.3
B 5 185 51288 262.32 881 849 192.3
B 12 111 23595 118.3 881 849 192.3
C 4 5 4403041 20675.15 778 772 212.9
C 13 3 352422 1651.52 778 772 212.9
C 12 252 93444 435.23 778 772 212.9
D 15 94 16730749 139229.8 415 396 120.2
D 2 249 897729 7467.59 415 396 120.2
D 3 12 243075 2019.57 415 396 120.2

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