ASTROSAT CZTI

Data Quality Report

Orbit 19628

Creation date: 2024-06-27T18:04:56.331005
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/AS1T03_116T01_9000002916_19628cztM0_level2.evt modeM0/AS1T03_116T01_9000002916_19628cztM0_level2_quad_clean.evt
Size (bytes)617,103,36098,026,560
Size588.5 MB 93.5 MB
Events in quadrant A3,352,742658,973
Events in quadrant B3,429,492664,647
Events in quadrant C3,527,204621,735
Events in quadrant D7,934,311564,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137752
B0140242
C0142633
D0280672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6582671.017928%
B6582991.504102%
C65811231.869017%
D6581145822.154688%

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 7867 6584 0 0 0.00% 0.00%
B 7867 6583 7 7 0.09% 0.11%
C 7866 6583 6 6 0.08% 0.09%
D 7866 6582 1271 1271 16.16% 19.31%

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 0 226 7726 39.42 871 859 174.2
A 13 254 6906 34.72 871 859 174.2
A 3 137 6376 31.67 871 859 174.2
B 7 220 37342 227.31 857 838 160.6
B 12 111 18968 112.89 857 838 160.6
B 11 111 16729 98.95 857 838 160.6
C 3 233 200740 1058.63 814 821 188.8
C 14 238 130536 686.88 814 821 188.8
C 9 54 16174 81.3 814 821 188.8
D 12 218 3592160 19473.53 760 738 184.4
D 1 52 704047 3813.51 760 738 184.4
D 12 233 551618 2987.0 760 738 184.4

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