ASTROSAT CZTI

Data Quality Report

Orbit 20230502_A12_006T09_9000005592_level2

Creation date: 2023-05-04T10:32:05.300044
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/AS1A12_006T09_9000005592cztM0_level2.fits modeM0/AS1A12_006T09_9000005592cztM0_level2_quad_clean.evt
Size (bytes)331,562,880320,189,760
Size316.2 MB 305.4 MB
Events in quadrant A1,987,3681,879,362
Events in quadrant B1,899,6821,872,657
Events in quadrant C1,934,0681,782,847
Events in quadrant D1,661,0101,602,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07620
C07620
D07620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0796800
B0797010
C0790410
D0998220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37258620.166407%
B372562710.727400%
C372593020.810542%
D3725215944.278965%

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 50493 37259 0 0 0.00% 0.00%
B 50493 37259 0 0 0.00% 0.00%
C 50493 37251 0 0 0.00% 0.00%
D 50493 37253 0 0 0.00% 0.00%

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 7 110 1640 8.61 517 484 134.3
A 9 19 1615 8.42 517 484 134.3
A 0 29 1537 7.84 517 484 134.3
B 2 9 1637 11.65 501 476 99.6
B 2 8 1358 8.85 501 476 99.6
B 5 128 1330 8.57 501 476 99.6
C 1 81 1611 8.52 511 476 133.3
C 1 80 1591 8.37 511 476 133.3
C 3 202 1519 7.83 511 476 133.3
D 7 3 1233 6.29 474 432 127.3
D 3 14 1198 6.02 474 432 127.3
D 4 160 1176 5.84 474 432 127.3

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