ASTROSAT CZTI

Data Quality Report

Orbit 53736

Creation date: 2025-09-03T19:51:46.727950
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_022T04_9000006506_53736cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53736cztM0_level2_quad_clean.evt
Size (bytes)1,184,993,28067,006,080
Size1.1 GB 63.9 MB
Events in quadrant A17,397,48026,027
Events in quadrant B3,325,187709,705
Events in quadrant C12,516,649363,514
Events in quadrant D10,078,062435,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05659414
B0152101
C04197315
D0349025

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7094688897.096138%
B7095370.521494%
C7094334647.166620%
D7094217330.631520%

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 7095 7093 6219 6219 87.65% 87.68%
B 7095 7095 14 14 0.20% 0.20%
C 7096 7094 3054 3054 43.04% 43.05%
D 7096 7095 1922 1922 27.09% 27.09%

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 63 15778193 259293.56 240 234 60.8
A 3 78 250470 4112.36 240 234 60.8
A 8 245 222686 3655.76 240 234 60.8
B 0 213 109807 692.0 736 711 157.7
B 5 185 55993 350.66 736 711 157.7
B 7 0 52494 328.46 736 711 157.7
C 1 241 5575987 37512.25 535 531 148.6
C 15 224 3284919 22097.7 535 531 148.6
C 13 3 625043 4201.78 535 531 148.6
D 2 172 3891985 21786.12 622 595 178.6
D 1 241 1943507 10877.48 622 595 178.6
D 6 239 730034 4083.8 622 595 178.6

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