ASTROSAT CZTI

Data Quality Report

Orbit 44678

Creation date: 2024-06-27T23:05:13.503928
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/AS1A13_072T01_9000006008_44678cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44678cztM0_level2_quad_clean.evt
Size (bytes)427,970,880109,549,440
Size408.1 MB 104.5 MB
Events in quadrant A4,892,449731,623
Events in quadrant B3,065,558771,477
Events in quadrant C3,078,880727,485
Events in quadrant D4,303,159636,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199012
B0136672
C0137972
D0175102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64591362.105589%
B6459530.820560%
C6459500.774114%
D64593114.814987%

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 7619 6460 13 13 0.17% 0.20%
B 7619 6460 6 6 0.08% 0.09%
C 7619 6460 27 27 0.35% 0.42%
D 7619 6460 189 189 2.48% 2.93%

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 10 83 1988943 13305.65 723 708 149.4
A 13 248 96658 642.12 723 708 149.4
A 3 137 8148 49.79 723 708 149.4
B 5 255 63529 441.89 731 707 142.2
B 7 221 35620 245.58 731 707 142.2
B 4 171 29202 200.43 731 707 142.2
C 2 14 117328 701.29 710 713 166.3
C 14 254 79682 474.9 710 713 166.3
C 14 206 68586 408.17 710 713 166.3
D 13 249 657784 3843.58 686 667 171.0
D 1 52 357378 2086.46 686 667 171.0
D 13 174 313963 1832.52 686 667 171.0

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