ASTROSAT CZTI

Data Quality Report

Orbit 46156

Creation date: 2024-06-27T23:19:47.782817
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_092T16_9000006178_46156cztM0_level2.fits modeM0/AS1A13_092T16_9000006178_46156cztM0_level2_quad_clean.evt
Size (bytes)534,758,400107,585,280
Size510.0 MB 102.6 MB
Events in quadrant A5,793,228731,161
Events in quadrant B3,519,687765,276
Events in quadrant C4,521,639714,550
Events in quadrant D5,474,540609,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213911
B0145611
C0178491
D0206121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62742023.219637%
B6274490.781001%
C62742183.474657%
D627566410.581673%

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 7534 6275 42 42 0.56% 0.67%
B 7534 6275 8 8 0.11% 0.13%
C 7534 6275 132 132 1.75% 2.10%
D 7535 6276 505 505 6.70% 8.05%

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 2911208 19420.87 728 713 149.9
A 7 3 23427 151.56 728 713 149.9
A 9 191 22322 144.19 728 713 149.9
B 3 112 552304 3885.71 731 708 142.0
B 5 172 31964 220.18 731 708 142.0
B 12 111 17951 121.46 731 708 142.0
C 14 254 1582380 9388.27 717 721 168.5
C 12 2 101296 596.98 717 721 168.5
C 2 14 21458 123.09 717 721 168.5
D 13 249 1219384 7066.96 690 669 172.5
D 1 52 750697 4349.18 690 669 172.5
D 5 235 457783 2650.66 690 669 172.5

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