ASTROSAT CZTI

Data Quality Report

Orbit 09787

Creation date: 2024-06-27T15:50:39.383263
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/AS1G05_218T01_9000001394_09787cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09787cztM0_level2_quad_clean.evt
Size (bytes)454,276,80072,262,080
Size433.2 MB 68.9 MB
Events in quadrant A3,115,695432,896
Events in quadrant B3,241,290440,557
Events in quadrant C3,071,032431,818
Events in quadrant D3,873,954415,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137298
B0139073
C0137247
D0159527

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67051031.536167%
B67061221.819266%
C6704681.014320%
D67041622.416468%

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 7414 6710 0 0 0.00% 0.00%
B 7414 6710 7 7 0.09% 0.10%
C 7414 6710 3 3 0.04% 0.04%
D 7414 6710 56 56 0.76% 0.83%

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 7431 40.15 807 787 165.5
A 12 194 6600 35.13 807 787 165.5
A 13 253 5246 26.95 807 787 165.5
B 0 214 53735 338.94 807 788 156.2
B 4 239 34651 216.77 807 788 156.2
B 12 111 17621 107.76 807 788 156.2
C 14 234 19508 102.7 781 786 182.3
C 13 61 5841 27.73 781 786 182.3
C 8 222 4283 19.18 781 786 182.3
D 1 52 525403 2684.05 778 757 195.5
D 2 152 254319 1297.21 778 757 195.5
D 2 14 91775 465.64 778 757 195.5

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