ASTROSAT CZTI

Data Quality Report

Orbit 40682

Creation date: 2024-06-27T22:19:07.057262
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_029T02_9000005558_40682cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40682cztM0_level2_quad_clean.evt
Size (bytes)358,637,76089,055,360
Size342.0 MB 84.9 MB
Events in quadrant A3,054,149628,654
Events in quadrant B3,315,070642,512
Events in quadrant C2,935,288613,735
Events in quadrant D3,519,497407,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123643
B0136022
C0121822
D0147152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5778120.207684%
B5778801.384562%
C5778100.173070%
D5778173329.993077%

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 7209 5779 3 3 0.04% 0.05%
B 7209 5779 48 48 0.67% 0.83%
C 7209 5779 8 8 0.11% 0.14%
D 7209 5779 135 135 1.87% 2.34%

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 544210 4143.24 641 627 131.2
A 12 189 19319 142.47 641 627 131.2
A 13 6 11580 83.48 641 627 131.2
B 0 229 307750 2434.55 634 617 126.2
B 5 255 180048 1422.29 634 617 126.2
B 0 190 115969 914.36 634 617 126.2
C 15 214 253294 1729.78 624 628 146.1
C 9 187 140452 957.25 624 628 146.1
C 14 254 64013 433.94 624 628 146.1
D 12 227 339119 2724.61 498 484 124.3
D 12 191 316947 2546.21 498 484 124.3
D 2 250 219096 1758.92 498 484 124.3

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