ASTROSAT CZTI

Data Quality Report

Orbit 20211103_A11_080T01_9000004756_level2

Creation date: 2022-07-08T10:17:45.399473
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/AS1A11_080T01_9000004756cztM0_level2.evt modeM0/AS1A11_080T01_9000004756cztM0_level2_quad_clean.evt
Size (bytes)3,207,070,080528,765,120
Size3.0 GB 504.3 MB
Events in quadrant A16,323,7073,596,831
Events in quadrant B22,829,7203,462,963
Events in quadrant C17,931,7833,486,319
Events in quadrant D37,699,1263,076,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07160
C07130
D07160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01360
C01350
D01370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706920
B0899590
C0755870
D01360120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34852290.083209%
B3480519195.513576%
C348484631.328627%
D34783457813.161602%

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 122197 34984 4 4 0.00% 0.01%
B 122199 34900 1355 1355 1.11% 3.88%
C 122199 34983 292 292 0.24% 0.83%
D 122198 34897 4506 4506 3.69% 12.91%

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 15 47 86736 99.33 4161 4093 832.0
A 13 254 64882 73.06 4161 4093 832.0
A 9 143 55650 61.97 4161 4093 832.0
B 5 172 5797242 7641.18 4040 3942 758.2
B 0 219 303030 394.49 4040 3942 758.2
B 0 229 156076 200.66 4040 3942 758.2
C 0 10 1195203 1296.06 3981 4023 919.1
C 7 221 397462 428.08 3981 4023 919.1
C 1 241 317097 340.64 3981 4023 919.1
D 8 195 5876309 5926.24 3804 3733 990.9
D 7 223 3602381 3631.53 3804 3733 990.9
D 12 227 2991677 3015.25 3804 3733 990.9

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