ASTROSAT CZTI

Data Quality Report

Orbit 20230710_A12_044T22_9000005740_level2

Creation date: 2023-07-14T10:45:05.967185
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/AS1A12_044T22_9000005740cztM0_level2.fits modeM0/AS1A12_044T22_9000005740cztM0_level2_quad_clean.evt
Size (bytes)169,689,600216,512,640
Size161.8 MB 206.5 MB
Events in quadrant A995,8641,360,949
Events in quadrant B982,9941,393,446
Events in quadrant C1,009,0941,319,687
Events in quadrant D867,1561,199,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0555050
B0384390
C0376110
D0425540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186375272.827708%
B18637890.477545%
C18637140.075119%
D186373191.711649%

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 27449 18637 0 0 0.00% 0.00%
B 27449 18637 0 0 0.00% 0.00%
C 27449 18637 0 0 0.00% 0.00%
D 27449 18633 0 0 0.00% 0.00%

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 7 110 846 8.85 259 242 68.3
A 0 29 795 8.1 259 242 68.3
A 14 95 783 7.92 259 242 68.3
B 2 9 902 12.05 259 246 54.4
B 2 8 729 8.87 259 246 54.4
B 4 146 679 7.95 259 246 54.4
C 1 81 811 8.06 266 250 69.6
C 1 80 762 7.36 266 250 69.6
C 3 202 748 7.16 266 250 69.6
D 6 231 671 6.57 248 226 67.7
D 7 3 664 6.47 248 226 67.7
D 6 67 652 6.29 248 226 67.7

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