ASTROSAT CZTI

Data Quality Report

Orbit 37023

Creation date: 2024-06-27T21:34:23.375710
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/AS1C07_015T06_9000005264_37023cztM0_level2.evt modeM0/AS1C07_015T06_9000005264_37023cztM0_level2_quad_clean.evt
Size (bytes)760,714,560132,811,200
Size725.5 MB 126.7 MB
Events in quadrant A4,950,052836,531
Events in quadrant B5,753,038833,169
Events in quadrant C5,424,380844,411
Events in quadrant D6,215,497797,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392
B04810
C0447
D05517

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273156159
B0312467273
C0293627129
D03578610388

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028048
B027354
C027457
D027152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10300100.097087%
B101872912.856582%
C10288930.903966%
D100621741.729278%

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 22826 10953 0 0 0.00% 0.00%
B 22831 10905 189 189 0.83% 1.73%
C 22832 10913 75 75 0.33% 0.69%
D 22812 10778 133 133 0.58% 1.23%

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 10 83 398097 1693.01 1162 1136 234.5
A 13 6 29541 121.15 1162 1136 234.5
A 13 254 14654 57.65 1162 1136 234.5
B 5 184 864472 3975.7 1129 1098 217.2
B 5 172 128432 586.35 1129 1098 217.2
B 5 255 88910 404.36 1129 1098 217.2
C 15 214 436015 1649.15 1137 1147 263.7
C 1 23 275801 1041.57 1137 1147 263.7
C 0 10 128550 483.15 1137 1147 263.7
D 12 235 735505 2727.13 1113 1083 269.3
D 2 153 309055 1143.59 1113 1083 269.3
D 2 250 250690 926.87 1113 1083 269.3

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