ASTROSAT CZTI

Data Quality Report

Orbit 23851

Creation date: 2024-06-27T18:59:21.468369
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_091T10_9000003532_23851cztM0_level2.evt modeM0/AS1A07_091T10_9000003532_23851cztM0_level2_quad_clean.evt
Size (bytes)477,126,72065,609,280
Size455.0 MB 62.6 MB
Events in quadrant A3,353,087387,332
Events in quadrant B3,449,694391,053
Events in quadrant C3,653,730376,906
Events in quadrant D3,547,885373,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141557
B0144014
C0149344
D0148778

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6558310.472705%
B6559500.762311%
C65591151.753316%
D6558400.609942%

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 7710 6561 0 0 0.00% 0.00%
B 7710 6561 10 10 0.13% 0.15%
C 7710 6561 17 17 0.22% 0.26%
D 7710 6561 9 9 0.12% 0.14%

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 13 254 10729 56.75 868 851 174.0
A 3 137 7499 38.2 868 851 174.0
A 0 226 7462 37.98 868 851 174.0
B 15 33 39261 236.87 857 835 162.2
B 0 189 30037 180.01 857 835 162.2
B 12 111 19611 115.74 857 835 162.2
C 14 238 132148 678.96 832 839 193.4
C 7 247 98135 503.09 832 839 193.4
C 0 10 96196 493.06 832 839 193.4
D 1 52 237587 1140.69 849 826 207.6
D 8 195 74956 357.15 849 826 207.6
D 2 234 26908 125.66 849 826 207.6

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