ASTROSAT CZTI

Data Quality Report

Orbit 20180814_A04_198T01_9000002308_level2

Creation date: 2018-08-16T14:01:14.920268
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/AS1A04_198T01_9000002308cztM0_level2.evt modeM0/AS1A04_198T01_9000002308cztM0_level2_quad_clean.evt
Size (bytes)5,562,849,6001,015,793,280
Size5.2 GB 968.7 MB
Events in quadrant A36,774,3906,461,251
Events in quadrant B39,280,3086,522,108
Events in quadrant C38,170,7376,315,419
Events in quadrant D49,073,2976,209,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015640
B015640
C015640
D015640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590120
B01651530
C01609050
D01965110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A767138151.062401%
B7671311901.551236%
C7671311531.503005%
D7671335924.682388%

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 88809 76724 24 24 0.03% 0.03%
B 88809 76721 219 219 0.25% 0.29%
C 88809 76721 45 45 0.05% 0.06%
D 88809 76726 2820 2820 3.18% 3.68%

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 14 238 202394 102.41 9449 9252 1886.1
A 13 248 115739 56.46 9449 9252 1886.1
A 0 226 84842 40.08 9449 9252 1886.1
B 3 64 680624 381.63 9387 9140 1759.5
B 5 65 589581 329.88 9387 9140 1759.5
B 0 189 372377 206.44 9387 9140 1759.5
C 14 238 1401284 661.32 9102 9159 2105.1
C 3 233 1128944 531.95 9102 9159 2105.1
C 0 207 93824 40.22 9102 9159 2105.1
D 5 222 5483190 2487.31 9143 8889 2200.9
D 1 52 3558517 1612.82 9143 8889 2200.9
D 12 110 2672908 1210.43 9143 8889 2200.9

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