ASTROSAT CZTI

Data Quality Report

Orbit 13885

Creation date: 2024-06-27T16:47:21.545884
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/AS1A04_010T01_9000002046_13885cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13885cztM0_level2_quad_clean.evt
Size (bytes)655,597,440101,934,720
Size625.2 MB 97.2 MB
Events in quadrant A4,550,487624,298
Events in quadrant B4,317,397635,949
Events in quadrant C4,316,071638,505
Events in quadrant D6,093,578596,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192453
B0184232
C0180872
D0237752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85204535.316901%
B85203834.495305%
C85201992.335681%
D85204194.917840%

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 9116 8522 155 155 1.70% 1.82%
B 9116 8521 44 44 0.48% 0.52%
C 9116 8522 0 0 0.00% 0.00%
D 9116 8521 161 161 1.77% 1.89%

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 23 431176 1995.81 1053 1025 215.5
A 0 226 36610 165.1 1053 1025 215.5
A 4 2 34049 153.22 1053 1025 215.5
B 4 80 165736 797.58 1050 1020 206.5
B 12 111 25431 118.2 1050 1020 206.5
B 11 111 21413 98.75 1050 1020 206.5
C 3 233 271575 1108.29 1037 1041 244.1
C 13 61 7538 26.62 1037 1041 244.1
C 14 234 3285 9.19 1037 1041 244.1
D 1 52 1398513 5754.68 1007 981 242.9
D 8 195 289465 1187.9 1007 981 242.9
D 13 122 234130 960.05 1007 981 242.9

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