ASTROSAT CZTI

Data Quality Report

Orbit 08137

Creation date: 2024-06-27T15:28:31.869555
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_051T01_9000001120_08137cztM0_level2.evt modeM0/AS1A03_051T01_9000001120_08137cztM0_level2_quad_clean.evt
Size (bytes)372,792,96072,552,960
Size355.5 MB 69.2 MB
Events in quadrant A2,898,482451,309
Events in quadrant B2,767,164464,880
Events in quadrant C2,575,308451,177
Events in quadrant D2,657,219427,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126812
B0123231
C0117731
D0122861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5757841.459093%
B5757550.955359%
C5757140.243182%
D5757300.521105%

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 6537 5759 65 65 0.99% 1.13%
B 6537 5759 16 16 0.24% 0.28%
C 6537 5759 0 0 0.00% 0.00%
D 6537 5759 20 20 0.31% 0.35%

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 13 170 325013 2380.93 663 649 136.2
A 8 15 13282 92.73 663 649 136.2
A 13 248 10470 72.09 663 649 136.2
B 10 16 62273 482.48 672 656 127.7
B 0 214 51816 400.6 672 656 127.7
B 10 252 19804 149.94 672 656 127.7
C 1 16 30178 194.54 651 658 151.7
C 13 61 5048 28.93 651 658 151.7
C 8 222 4745 26.93 651 658 151.7
D 1 52 82183 470.97 636 624 173.2
D 12 233 56286 321.43 636 624 173.2
D 7 71 46948 267.5 636 624 173.2

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