ASTROSAT CZTI

Data Quality Report

Orbit 07270

Creation date: 2024-06-27T15:17:47.395658
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/AS1A02_155T01_9000000994_07270cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07270cztM0_level2_quad_clean.evt
Size (bytes)695,030,400135,512,640
Size662.8 MB 129.2 MB
Events in quadrant A4,853,034849,548
Events in quadrant B5,430,165866,448
Events in quadrant C4,940,870853,437
Events in quadrant D5,116,529811,051

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217223
B0231292
C0217912
D0228472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104402662.547893%
B104403583.429119%
C104401911.829502%
D104402482.375479%

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 10925 10441 7 7 0.06% 0.07%
B 10925 10442 105 105 0.96% 1.01%
C 10925 10441 2 2 0.02% 0.02%
D 10925 10441 64 64 0.59% 0.61%

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 92654 362.54 1230 1201 252.3
A 3 1 17470 64.49 1230 1201 252.3
A 0 226 11554 41.04 1230 1201 252.3
B 10 245 354804 1481.75 1241 1206 238.6
B 4 239 106265 440.25 1241 1206 238.6
B 4 81 73180 301.61 1241 1206 238.6
C 7 247 146510 512.65 1218 1223 283.4
C 9 68 30445 103.11 1218 1223 283.4
C 13 61 9540 29.35 1218 1223 283.4
D 2 14 233583 786.03 1205 1164 295.7
D 2 216 224080 753.89 1205 1164 295.7
D 14 34 76153 253.61 1205 1164 295.7

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