ASTROSAT CZTI

Data Quality Report

Orbit 31814

Creation date: 2024-06-27T20:33:04.866681
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/AS1A10_109T01_9000004646_31814cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31814cztM0_level2_quad_clean.evt
Size (bytes)654,600,96092,280,960
Size624.3 MB 88.0 MB
Events in quadrant A5,144,050595,170
Events in quadrant B5,572,454605,317
Events in quadrant C4,116,454578,905
Events in quadrant D4,554,218563,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192972
B0211692
C0164082
D0176822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648072611.203704%
B64802884.444444%
C64803685.679012%
D64801582.438272%

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 7665 6481 412 412 5.38% 6.36%
B 7665 6481 48 48 0.63% 0.74%
C 7665 6481 119 119 1.55% 1.84%
D 7665 6481 86 86 1.12% 1.33%

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 0 13 1729392 9916.87 883 869 174.3
A 13 254 11174 59.12 883 869 174.3
A 13 6 10708 56.45 883 869 174.3
B 6 159 1691982 10089.72 891 872 167.6
B 10 245 375582 2235.64 891 872 167.6
B 12 111 20310 115.97 891 872 167.6
C 0 10 565715 2899.75 843 852 194.8
C 14 238 156346 798.23 843 852 194.8
C 3 233 25432 126.18 843 852 194.8
D 8 195 759162 3678.5 875 857 206.1
D 12 227 338090 1635.9 875 857 206.1
D 12 218 79067 379.39 875 857 206.1

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