ASTROSAT CZTI

Data Quality Report

Orbit 34944

Creation date: 2022-03-16T05:18:07.365220
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/AS1A11_069T01_9000005008_34944cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34944cztM0_level2_quad_clean.evt
Size (bytes)683,974,08052,505,280
Size652.3 MB 50.1 MB
Events in quadrant A9,740,578170,446
Events in quadrant B3,214,189376,940
Events in quadrant C2,870,275369,812
Events in quadrant D4,558,791328,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320622
B0126062
C0113222
D0168842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884357773.239148%
B48842565.241605%
C48841212.477477%
D48844439.070434%

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 7037 4884 3503 3503 49.78% 71.72%
B 7038 4885 230 230 3.27% 4.71%
C 7038 4885 102 102 1.45% 2.09%
D 7038 4885 450 450 6.39% 9.21%

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 15 169 8564425 142490.06 291 285 60.1
A 10 83 32640 538.32 291 285 60.1
A 7 16 7036 112.32 291 285 60.1
B 5 172 774675 7113.03 576 562 108.8
B 0 190 105266 962.09 576 562 108.8
B 4 232 25764 231.57 576 562 108.8
C 0 10 418203 3169.87 568 572 131.7
C 15 214 203683 1541.64 568 572 131.7
C 12 250 18804 138.38 568 572 131.7
D 8 195 638918 4732.64 550 536 134.9
D 1 47 574641 4256.12 550 536 134.9
D 13 249 250810 1855.4 550 536 134.9

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