ASTROSAT CZTI

Data Quality Report

Orbit 20170418_G07_053T01_9000001186_level2

Creation date: 2017-09-23T18:55:16.530089
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/AS1G07_053T01_9000001186cztM0_level2.evt modeM0/AS1G07_053T01_9000001186cztM0_level2_quad_clean.evt
Size (bytes)1,922,817,600329,132,160
Size1.8 GB 313.9 MB
Events in quadrant A13,374,8282,044,640
Events in quadrant B14,610,1512,087,414
Events in quadrant C12,885,2152,057,973
Events in quadrant D15,552,6831,935,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561970
B0596870
C0551550
D0638120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05460
C05460
D05460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268082861.066846%
B268114891.823878%
C268071330.496139%
D268095662.111231%

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 33013 26862 46 46 0.14% 0.17%
B 33013 26862 234 234 0.71% 0.87%
C 33013 26859 0 0 0.00% 0.00%
D 33013 26864 415 415 1.26% 1.54%

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 14 111 323846 475.26 3355 3293 674.5
A 5 16 45224 62.17 3355 3293 674.5
A 13 251 38916 52.82 3355 3293 674.5
B 10 16 831700 1331.79 3347 3272 622.0
B 0 214 498886 796.75 3347 3272 622.0
B 12 111 65167 99.5 3347 3272 622.0
C 13 61 24700 28.26 3297 3320 756.6
C 14 67 20716 22.99 3297 3320 756.6
C 9 160 9930 8.74 3297 3320 756.6
D 1 52 1311543 1505.29 3257 3181 869.2
D 12 221 1137734 1305.32 3257 3181 869.2
D 12 227 195214 220.94 3257 3181 869.2

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