ASTROSAT CZTI

Data Quality Report

Orbit 20221201_A12_025T11_9000005398_level2

Creation date: 2022-12-05T16:34:57.362867
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/AS1A12_025T11_9000005398cztM0_level2.fits modeM0/AS1A12_025T11_9000005398cztM0_level2_quad_clean.evt
Size (bytes)196,560,000160,917,120
Size187.5 MB 153.5 MB
Events in quadrant A1,171,698881,237
Events in quadrant B1,120,734873,904
Events in quadrant C1,160,676841,068
Events in quadrant D978,748755,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511150
B0489510
C0460380
D0701370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220991180.533961%
B220994371.977465%
C22099620.280556%
D2209911034.991176%

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 27562 22098 0 0 0.00% 0.00%
B 27562 22094 0 0 0.00% 0.00%
C 27562 22098 0 0 0.00% 0.00%
D 27562 22090 0 0 0.00% 0.00%

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 7 110 955 8.38 306 286 79.9
A 9 19 934 8.11 306 286 79.9
A 0 29 902 7.71 306 286 79.9
B 2 9 957 11.21 296 282 60.2
B 3 80 870 9.76 296 282 60.2
B 2 8 830 9.1 296 282 60.2
C 1 81 970 8.46 306 286 80.8
C 1 80 938 8.07 306 286 80.8
C 3 202 883 7.39 306 286 80.8
D 7 3 722 6.11 279 254 76.6
D 10 113 707 5.92 279 254 76.6
D 6 62 707 5.92 279 254 76.6

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