ASTROSAT CZTI

Data Quality Report

Orbit 17291

Creation date: 2024-06-27T17:34:37.058247
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_010T02_9000002556_17291cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17291cztM0_level2_quad_clean.evt
Size (bytes)658,575,360119,808,000
Size628.1 MB 114.3 MB
Events in quadrant A4,441,669757,662
Events in quadrant B4,479,665759,272
Events in quadrant C4,456,788724,671
Events in quadrant D5,915,454720,994

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197183
B0196642
C0197132
D0242942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96091081.123946%
B96101071.113424%
C96101541.602497%
D96103934.089490%

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 11194 9611 3 3 0.03% 0.03%
B 11195 9611 1 1 0.01% 0.01%
C 11195 9611 0 0 0.00% 0.00%
D 11195 9612 187 187 1.67% 1.95%

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 4 2 25130 103.4 1146 1122 232.2
A 0 226 10222 39.19 1146 1122 232.2
A 3 137 9051 34.15 1146 1122 232.2
B 12 111 27824 120.48 1143 1111 221.7
B 11 111 24052 103.47 1143 1111 221.7
B 14 111 21038 89.88 1143 1111 221.7
C 14 238 168669 653.01 1096 1103 256.6
C 3 233 13396 47.9 1096 1103 256.6
C 13 61 7637 25.46 1096 1103 256.6
D 13 232 609865 2286.54 1097 1066 266.3
D 11 176 581074 2178.4 1097 1066 266.3
D 1 52 141964 529.19 1097 1066 266.3

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