ASTROSAT CZTI

Data Quality Report

Orbit 05756

Creation date: 2024-06-27T14:58:45.305197
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/AS1A02_149T01_9000000740_05756cztM0_level2.evt modeM0/AS1A02_149T01_9000000740_05756cztM0_level2_quad_clean.evt
Size (bytes)413,766,72069,488,640
Size394.6 MB 66.3 MB
Events in quadrant A2,952,314414,739
Events in quadrant B3,175,591418,800
Events in quadrant C2,892,857416,142
Events in quadrant D3,064,937397,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132927
B0137974
C0132119
D0137222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6539160.244686%
B6540280.428135%
C6537100.152975%
D6541250.382205%

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 7636 6542 4 4 0.05% 0.06%
B 7636 6542 8 8 0.10% 0.12%
C 7636 6541 0 0 0.00% 0.00%
D 7636 6542 15 15 0.20% 0.23%

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 0 50 22971 142.78 758 739 155.7
A 0 226 7353 42.47 758 739 155.7
A 12 194 7287 42.05 758 739 155.7
B 15 85 80059 535.82 770 752 148.0
B 15 204 59233 395.12 770 752 148.0
B 0 219 18552 120.26 770 752 148.0
C 13 61 5979 30.02 741 745 174.3
C 3 202 1905 6.65 741 745 174.3
C 7 247 1641 5.14 741 745 174.3
D 10 15 91280 497.47 735 714 182.1
D 8 195 51518 279.06 735 714 182.1
D 2 14 42012 226.85 735 714 182.1

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