ASTROSAT CZTI

Data Quality Report

Orbit 44744

Creation date: 2024-06-27T23:05:59.452280
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_004T11_9000006018_44744cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44744cztM0_level2_quad_clean.evt
Size (bytes)738,074,880142,824,960
Size703.9 MB 136.2 MB
Events in quadrant A9,267,999923,196
Events in quadrant B4,778,551995,447
Events in quadrant C4,120,292966,963
Events in quadrant D8,435,800794,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346682
B0205612
C0191482
D0316412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A927497910.556394%
B92751841.983827%
C9275690.743935%
D9275128013.800539%

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 10764 9276 587 587 5.45% 6.33%
B 10765 9277 39 39 0.36% 0.42%
C 10765 9277 11 11 0.10% 0.12%
D 10765 9277 960 960 8.92% 10.35%

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 15 223 2678439 12833.07 996 974 208.6
A 10 83 2674773 12815.5 996 974 208.6
A 13 248 65562 309.57 996 974 208.6
B 0 189 343078 1696.92 1024 991 201.6
B 5 255 131382 646.8 1024 991 201.6
B 15 36 63327 309.21 1024 991 201.6
C 14 254 110880 462.16 1015 1020 237.7
C 3 233 15304 60.09 1015 1020 237.7
C 1 3 13266 51.52 1015 1020 237.7
D 8 129 2133980 8873.05 958 929 240.4
D 1 47 1013389 4211.62 958 929 240.4
D 13 174 479588 1991.12 958 929 240.4

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