ASTROSAT CZTI

Data Quality Report

Orbit 17131

Creation date: 2024-06-27T17:32:33.287770
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_056T01_9000002540_17131cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17131cztM0_level2_quad_clean.evt
Size (bytes)816,220,800141,900,480
Size778.4 MB 135.3 MB
Events in quadrant A5,439,575887,165
Events in quadrant B5,563,207894,323
Events in quadrant C7,011,191846,376
Events in quadrant D5,902,087849,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241172
B0241712
C0287972
D0257972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118551511.273724%
B118561501.265182%
C118562452.066464%
D118561521.282051%

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 13070 11856 0 0 0.00% 0.00%
B 13071 11857 0 0 0.00% 0.00%
C 13071 11857 0 0 0.00% 0.00%
D 13071 11857 23 23 0.18% 0.19%

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 12 189 23936 79.53 1409 1378 283.6
A 0 226 12211 38.19 1409 1378 283.6
A 3 137 10834 33.34 1409 1378 283.6
B 12 111 34023 119.64 1408 1371 272.9
B 0 229 30544 106.9 1408 1371 272.9
B 11 111 29738 103.94 1408 1371 272.9
C 3 233 1531136 4849.82 1349 1361 315.4
C 14 238 206720 651.05 1349 1361 315.4
C 13 61 9638 26.24 1349 1361 315.4
D 5 222 568676 1686.76 1371 1329 336.4
D 13 249 151569 446.67 1371 1329 336.4
D 2 234 44291 127.73 1371 1329 336.4

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