ASTROSAT CZTI

Data Quality Report

Orbit 24007

Creation date: 2024-06-27T19:01:04.198211
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/AS1A07_165T01_9000003558_24007cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24007cztM0_level2_quad_clean.evt
Size (bytes)791,043,840213,658,560
Size754.4 MB 203.8 MB
Events in quadrant A5,228,7991,449,460
Events in quadrant B5,595,3391,470,555
Events in quadrant C5,568,0231,395,188
Events in quadrant D6,792,0741,367,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232132
B0240572
C0238832
D0277912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11408700.613604%
B114081130.990533%
C114081861.630435%
D114082051.796985%

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 11833 11410 5 5 0.04% 0.04%
B 11833 11410 9 9 0.08% 0.08%
C 11833 11410 9 9 0.08% 0.08%
D 11833 11410 114 114 0.96% 1.00%

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 6 16 34617 122.72 1347 1315 271.4
A 13 254 19436 66.78 1347 1315 271.4
A 0 226 11837 38.77 1347 1315 271.4
B 0 197 226320 897.0 1342 1308 250.9
B 7 202 47904 185.75 1342 1308 250.9
B 12 111 30211 115.22 1342 1308 250.9
C 14 238 205956 686.39 1287 1293 298.2
C 0 239 203384 677.76 1287 1293 298.2
C 7 247 119533 396.55 1287 1293 298.2
D 1 52 796785 2511.64 1304 1264 316.7
D 8 195 796159 2509.66 1304 1264 316.7
D 12 218 77051 239.28 1304 1264 316.7

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