ASTROSAT CZTI

Data Quality Report

Orbit 20210226_A10_050T01_9000004212_level2

Creation date: 2021-03-06T11:17:10.203504
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_050T01_9000004212cztM0_level2_bc.evt modeM0/AS1A10_050T01_9000004212cztM0_level2_quad_clean.evt
Size (bytes)8,810,144,6401,369,768,320
Size8.2 GB 1.3 GB
Events in quadrant A23,815,1689,070,209
Events in quadrant B30,782,7209,036,052
Events in quadrant C127,392,7677,722,206
Events in quadrant D77,504,1568,246,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02269570
B02567540
C05692220
D04276190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022020
B022020
C022020
D022020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10802212341.142360%
B10802239633.668697%
C1080214657243.113839%
D1080231628115.071790%

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 139482 108028 31 31 0.02% 0.03%
B 139482 108020 209 209 0.15% 0.19%
C 139482 108008 9947 9947 7.13% 9.21%
D 139482 108015 2817 2817 2.02% 2.61%

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 13 652826 507.23 5933 5827 1275.5
A 13 254 217306 165.8 5933 5827 1275.5
A 15 174 88288 64.65 5933 5827 1275.5
B 5 255 3950658 3559.89 5876 5735 1108.2
B 10 245 2578803 2321.93 5876 5735 1108.2
B 5 172 426608 379.79 5876 5735 1108.2
C 3 233 107988324 94452.73 4797 4781 1143.3
C 14 254 501813 434.75 4797 4781 1143.3
C 2 114 188395 160.61 4797 4781 1143.3
D 1 52 27854224 22036.48 5507 5337 1263.8
D 8 195 13564477 10729.18 5507 5337 1263.8
D 12 233 5034964 3979.88 5507 5337 1263.8

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