ASTROSAT CZTI

Data Quality Report

Orbit 10456

Creation date: 2024-06-27T15:59:28.457214
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/AS1A03_126T01_9000001512_10456cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10456cztM0_level2_quad_clean.evt
Size (bytes)389,779,20051,456,960
Size371.7 MB 49.1 MB
Events in quadrant A2,967,463253,566
Events in quadrant B2,686,470300,318
Events in quadrant C2,493,260302,086
Events in quadrant D3,289,816325,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283170
B0284162
C0284158
D0271152

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03712825333
B03226520943
C02832616964
D03339620089

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073
B084
C084
D073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4638380.819319%
B5247510.971984%
C5621200.355809%
D5934530.893158%

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 5894 1 1 0.01% 0.02%
B 7534 6345 3 3 0.04% 0.05%
C 7534 6659 1 1 0.01% 0.02%
D 7534 6556 14 14 0.19% 0.21%

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 13 251 799546 7243.41 532 521 110.3
A 3 80 78284 704.95 532 521 110.3
A 1 162 14201 124.01 532 521 110.3
B 4 239 138036 1171.7 606 590 117.3
B 11 51 83977 710.86 606 590 117.3
B 0 214 31897 266.89 606 590 117.3
C 8 128 8533 53.11 634 636 148.7
C 8 112 4875 28.51 634 636 148.7
C 13 61 4759 27.73 634 636 148.7
D 8 195 332499 2057.36 669 651 161.3
D 1 52 139249 859.27 669 651 161.3
D 5 222 111318 686.1 669 651 161.3

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