ASTROSAT CZTI

Data Quality Report

Orbit 20210204_A10_048T03_9000004154_level2

Creation date: 2021-02-06T21:32:20.600682
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_048T03_9000004154cztM0_level2_bc.evt modeM0/AS1A10_048T03_9000004154cztM0_level2_quad_clean.evt
Size (bytes)5,499,014,4001,650,453,120
Size5.1 GB 1.5 GB
Events in quadrant A27,919,65410,627,128
Events in quadrant B30,385,58610,928,006
Events in quadrant C26,142,07510,425,106
Events in quadrant D73,776,0649,633,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02621350
B02704740
C02589650
D04302240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024840
B024840
C024840
D024840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12226917791.454989%
B12226826692.182910%
C12226823941.957994%
D1222681312910.737887%

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 151304 122274 117 117 0.08% 0.10%
B 151304 122269 244 244 0.16% 0.20%
C 151304 122273 1 1 0.00% 0.00%
D 151304 122271 1267 1267 0.84% 1.04%

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 12 96 1195605 841.84 6637 6530 1412.5
A 1 113 424366 295.82 6637 6530 1412.5
A 13 254 208042 142.67 6637 6530 1412.5
B 10 245 3212440 2552.53 6742 6580 1256.0
B 10 246 509413 400.36 6742 6580 1256.0
B 0 229 378158 295.85 6742 6580 1256.0
C 3 233 814444 538.0 6446 6434 1501.9
C 2 114 235870 152.77 6446 6434 1501.9
C 2 16 126208 79.75 6446 6434 1501.9
D 8 195 21699200 15359.49 6222 6027 1412.4
D 1 52 13820930 9781.41 6222 6027 1412.4
D 7 80 10740855 7600.62 6222 6027 1412.4

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