ASTROSAT CZTI

Data Quality Report

Orbit 20708

Creation date: 2024-06-27T18:18:37.686110
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_165T07_9000003062_20708cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20708cztM0_level2_quad_clean.evt
Size (bytes)2,924,280,000523,114,560
Size2.7 GB 498.9 MB
Events in quadrant A18,963,0583,374,149
Events in quadrant B20,716,8593,342,236
Events in quadrant C19,191,3983,215,392
Events in quadrant D26,949,9593,123,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08240
B08240
C08240
D08240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0829567
B0878187
C0832328
D01075387

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A406332460.605419%
B406345581.373234%
C406333700.910590%
D4063314883.662048%

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 45113 40639 5 5 0.01% 0.01%
B 45114 40641 141 141 0.31% 0.35%
C 45113 40640 0 0 0.00% 0.00%
D 45113 40640 1211 1211 2.68% 2.98%

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 5 16 76192 72.87 4909 4815 979.5
A 0 226 41980 37.94 4909 4815 979.5
A 3 137 40195 36.12 4909 4815 979.5
B 7 220 991233 1081.43 4847 4727 912.2
B 0 197 183466 195.94 4847 4727 912.2
B 3 64 114078 119.87 4847 4727 912.2
C 14 238 723867 667.62 4646 4674 1077.3
C 3 233 197287 178.8 4646 4674 1077.3
C 7 247 50101 42.17 4646 4674 1077.3
D 1 20 3631533 3211.17 4685 4554 1129.5
D 5 222 1832646 1618.52 4685 4554 1129.5
D 1 52 1700545 1501.56 4685 4554 1129.5

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