ASTROSAT CZTI

Data Quality Report

Orbit 38651

Creation date: 2024-06-27T21:54:38.247634
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_061T03_9000005390_38651cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38651cztM0_level2_quad_clean.evt
Size (bytes)298,825,92092,635,200
Size285.0 MB 88.3 MB
Events in quadrant A3,068,618623,450
Events in quadrant B2,482,136643,717
Events in quadrant C2,592,548620,315
Events in quadrant D2,532,891571,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121263
B0103812
C0103732
D0105202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943591.193607%
B4943250.505766%
C494360.121384%
D4944140.283172%

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 7096 4944 37 37 0.52% 0.75%
B 7096 4944 17 17 0.24% 0.34%
C 7096 4944 4 4 0.06% 0.08%
D 7097 4945 8 8 0.11% 0.16%

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 404083 3359.55 596 585 120.1
A 9 143 233719 1941.09 596 585 120.1
A 13 248 75437 623.22 596 585 120.1
B 5 184 37673 327.4 591 575 113.3
B 5 200 34369 298.24 591 575 113.3
B 0 186 28095 242.87 591 575 113.3
C 15 214 203392 1487.81 588 594 136.3
C 14 254 43530 315.0 588 594 136.3
C 3 110 21719 154.98 588 594 136.3
D 5 222 76480 532.2 589 576 142.6
D 2 234 28736 197.44 589 576 142.6
D 12 233 27024 185.44 589 576 142.6

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