ASTROSAT CZTI

Data Quality Report

Orbit 55215

Creation date: 2025-12-12T09:07:33.494801
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_55215cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55215cztM0_level2_quad_clean.evt
Size (bytes)499,973,76097,335,360
Size476.8 MB 92.8 MB
Events in quadrant A3,324,341651,005
Events in quadrant B3,149,379700,425
Events in quadrant C6,377,489555,597
Events in quadrant D5,124,469563,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151982
B0147192
C0237682
D0203282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6845831.212564%
B6845981.431702%
C684593613.674215%
D68443655.333139%

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 7895 6846 68 68 0.86% 0.99%
B 7895 6846 53 53 0.67% 0.77%
C 7895 6846 889 889 11.26% 12.99%
D 7894 6845 330 330 4.18% 4.82%

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 311854 1757.82 714 698 177.0
A 5 241 84732 474.73 714 698 177.0
A 3 45 43604 242.39 714 698 177.0
B 5 172 189203 1218.4 713 686 154.7
B 4 81 56347 359.74 713 686 154.7
B 0 182 19731 123.09 713 686 154.7
C 12 254 2272969 12518.58 657 653 181.5
C 14 254 525960 2894.01 657 653 181.5
C 13 3 380666 2093.56 657 653 181.5
D 11 129 1782170 9267.17 674 643 192.2
D 2 249 412883 2144.39 674 643 192.2
D 12 6 69294 357.11 674 643 192.2

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