ASTROSAT CZTI

Data Quality Report

Orbit 22260

Creation date: 2024-06-27T18:38:41.010530
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/AS1A07_018T07_9000003294_22260cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22260cztM0_level2_quad_clean.evt
Size (bytes)581,601,60068,258,880
Size554.7 MB 65.1 MB
Events in quadrant A3,306,188429,664
Events in quadrant B3,362,841444,091
Events in quadrant C3,341,528414,098
Events in quadrant D7,167,804330,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136961
B0139001
C0138471
D0256514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420220.342679%
B6421390.607382%
C6421610.950008%
D6420173326.993769%

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 7695 6421 0 0 0.00% 0.00%
B 7696 6422 0 0 0.00% 0.00%
C 7696 6422 0 0 0.00% 0.00%
D 7695 6421 1289 1289 16.75% 20.07%

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 13 248 15213 84.56 854 839 170.0
A 13 254 9427 50.52 854 839 170.0
A 0 226 7140 37.07 854 839 170.0
B 12 111 18875 112.91 857 838 159.7
B 11 111 16987 101.09 857 838 159.7
B 14 111 15356 90.88 857 838 159.7
C 14 238 132205 694.19 816 826 189.3
C 10 22 17639 88.84 816 826 189.3
C 3 9 11094 54.26 816 826 189.3
D 1 52 4341481 24564.52 736 718 176.7
D 2 234 20268 110.63 736 718 176.7
D 2 136 18502 100.64 736 718 176.7

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