ASTROSAT CZTI

Data Quality Report

Orbit 56657

Creation date: 2026-03-19T09:33:55.002923
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_56657cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56657cztM0_level2_quad_clean.evt
Size (bytes)648,201,600119,594,880
Size618.2 MB 114.1 MB
Events in quadrant A4,841,950803,997
Events in quadrant B7,346,548766,287
Events in quadrant C4,950,645762,469
Events in quadrant D6,180,748685,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209291
B0280241
C0212991
D0246561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86912653.049131%
B8691131015.073064%
C86922432.795674%
D86925386.189600%

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 8706 8692 161 161 1.85% 1.85%
B 8706 8692 965 965 11.08% 11.10%
C 8707 8693 133 133 1.53% 1.53%
D 8707 8693 538 538 6.18% 6.19%

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 12 3 577119 2466.86 950 923 233.6
A 8 249 146200 621.97 950 923 233.6
A 12 194 90232 382.36 950 923 233.6
B 4 206 3400449 17817.86 897 865 190.8
B 8 128 161456 841.69 897 865 190.8
B 4 21 84153 436.53 897 865 190.8
C 12 252 522947 2081.54 926 916 250.8
C 13 3 461337 1835.88 926 916 250.8
C 6 223 121449 480.61 926 916 250.8
D 3 12 973557 3873.54 900 859 251.1
D 2 249 790838 3145.91 900 859 251.1
D 2 31 222850 884.03 900 859 251.1

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