ASTROSAT CZTI

Data Quality Report

Orbit 55120

Creation date: 2025-12-06T13:59:14.530858
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_022T16_9000006532_55120cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55120cztM0_level2_quad_clean.evt
Size (bytes)752,725,440151,623,360
Size717.9 MB 144.6 MB
Events in quadrant A4,873,8591,009,614
Events in quadrant B4,666,3931,088,652
Events in quadrant C5,924,217947,619
Events in quadrant D11,547,498785,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02190
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02322945
B02257136
C02584272
D042071150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109801251.138434%
B10983520.473459%
C109731531.394332%
D10969168615.370590%

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 11011 11001 77 77 0.70% 0.70%
B 11011 11003 2 2 0.02% 0.02%
C 11011 10995 142 142 1.29% 1.29%
D 11011 10997 1521 1521 13.81% 13.83%

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 0 8 290525 1008.62 1154 1123 286.9
A 4 3 39043 132.16 1154 1123 286.9
A 3 14 31796 106.9 1154 1123 286.9
B 0 182 69260 276.72 1145 1101 246.3
B 12 111 30380 118.87 1145 1101 246.3
B 11 111 28335 110.57 1145 1101 246.3
C 6 223 457245 1509.2 1118 1105 302.2
C 13 3 324692 1070.63 1118 1105 302.2
C 12 249 259054 853.46 1118 1105 302.2
D 11 129 2983043 10106.52 1049 1003 295.1
D 15 94 1535505 5200.62 1049 1003 295.1
D 4 221 1531474 5186.96 1049 1003 295.1

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