ASTROSAT CZTI

Data Quality Report

Orbit 12591

Creation date: 2024-06-27T16:29:41.977819
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/AS1G08_071T01_9000001874_12591cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12591cztM0_level2_quad_clean.evt
Size (bytes)526,648,32099,731,520
Size502.3 MB 95.1 MB
Events in quadrant A3,314,597652,373
Events in quadrant B4,963,250615,475
Events in quadrant C3,307,070667,380
Events in quadrant D3,923,174631,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141283
B0191562
C0141622
D0159722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505831.275942%
B650572811.191391%
C6505811.245196%
D65052043.136049%

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 9026 6506 1 1 0.01% 0.02%
B 9026 6506 472 472 5.23% 7.25%
C 9026 6506 3 3 0.03% 0.05%
D 9026 6506 121 121 1.34% 1.86%

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 5 112 61842 363.16 838 823 168.0
A 12 189 19785 112.86 838 823 168.0
A 12 96 10060 54.98 838 823 168.0
B 3 64 992950 6477.44 803 783 153.2
B 4 239 725361 4730.47 803 783 153.2
B 0 230 29699 188.78 803 783 153.2
C 14 234 42463 217.38 836 842 191.5
C 13 61 6114 27.53 836 842 191.5
C 5 96 2789 10.17 836 842 191.5
D 1 52 588666 3031.48 817 795 193.9
D 10 199 86349 441.17 817 795 193.9
D 13 104 78023 398.24 817 795 193.9

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