ASTROSAT CZTI

Data Quality Report

Orbit 20220804_A11_083T04_9000005272_level2

Creation date: 2022-08-06T01:50:43.392521
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_083T04_9000005272cztM0_level2_bc.evt modeM0/AS1A11_083T04_9000005272cztM0_level2_quad_clean.evt
Size (bytes)978,586,560299,229,120
Size933.3 MB 285.4 MB
Events in quadrant A5,050,9531,985,449
Events in quadrant B6,538,7671,992,983
Events in quadrant C7,909,3541,935,515
Events in quadrant D8,817,6171,818,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416460
B0489680
C0527540
D0621110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19330550.284532%
B193305652.922918%
C193305712.953958%
D19330229911.893430%

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 28834 19335 9 9 0.03% 0.05%
B 28834 19330 41 41 0.14% 0.21%
C 28834 19333 39 39 0.14% 0.20%
D 28834 19323 101 101 0.35% 0.52%

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 742592 3270.15 1020 1002 226.8
A 11 254 319617 1404.98 1020 1002 226.8
A 13 254 25429 107.71 1020 1002 226.8
B 0 229 865397 4252.9 1020 998 203.2
B 5 184 450925 2213.67 1020 998 203.2
B 5 172 396435 1945.58 1020 998 203.2
C 14 254 1381732 6102.23 987 983 226.3
C 0 10 991799 4378.92 987 983 226.3
C 15 214 765214 3377.52 987 983 226.3
D 12 17 3078326 13865.65 946 919 221.9
D 2 250 488960 2198.93 946 919 221.9
D 2 153 355714 1598.57 946 919 221.9

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