ASTROSAT CZTI

Data Quality Report

Orbit 20190109_T03_070T05_9000002640_level2

Creation date: 2019-01-10T10:46:21.193541
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/AS1T03_070T05_9000002640cztM0_level2_bc.evt modeM0/AS1T03_070T05_9000002640cztM0_level2_quad_clean.evt
Size (bytes)762,255,360301,893,120
Size726.9 MB 287.9 MB
Events in quadrant A4,839,7721,908,272
Events in quadrant B6,034,7091,912,625
Events in quadrant C4,924,4911,849,839
Events in quadrant D5,641,2661,819,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492200
B0532560
C0494850
D0522370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240282491.036291%
B240285892.451307%
C240283001.248543%
D240283721.548194%

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 27883 24029 0 0 0.00% 0.00%
B 27883 24029 75 75 0.27% 0.31%
C 27883 24028 0 0 0.00% 0.00%
D 27883 24028 38 38 0.14% 0.16%

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 15 191 28518 100.74 1245 1220 271.0
A 15 174 19344 66.89 1245 1220 271.0
A 4 2 15762 53.67 1245 1220 271.0
B 10 245 698047 2928.99 1258 1225 237.9
B 7 220 174068 726.52 1258 1225 237.9
B 0 189 98056 407.01 1258 1225 237.9
C 5 218 155196 536.97 1212 1206 286.8
C 5 219 42703 144.7 1212 1206 286.8
C 0 207 30816 103.25 1212 1206 286.8
D 5 222 261490 863.55 1217 1180 301.4
D 1 52 185335 610.92 1217 1180 301.4
D 7 38 131731 433.09 1217 1180 301.4

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