ASTROSAT CZTI

Data Quality Report

Orbit 27608

Creation date: 2024-06-27T19:42:08.163309
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/AS1T03_257T01_9000003976_27608cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27608cztM0_level2_quad_clean.evt
Size (bytes)606,257,28085,233,600
Size578.2 MB 81.3 MB
Events in quadrant A3,829,038521,374
Events in quadrant B4,331,034526,074
Events in quadrant C3,975,877505,412
Events in quadrant D5,687,459477,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114027774122688846
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164780
B0177950
C0168140
D0222420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79172823.561955%
B79164215.318343%
C79163344.219303%
D79166568.287014%

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 7917 7917 0 0 0.00% 0.00%
B 7916 7916 47 47 0.59% 0.59%
C 7916 7916 8 8 0.10% 0.10%
D 7916 7916 479 479 6.05% 6.05%

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 15 174 15757 73.52 987 964 201.2
A 13 254 11988 54.79 987 964 201.2
A 3 137 9918 44.5 987 964 201.2
B 10 245 379545 2015.98 978 952 187.8
B 0 230 24923 127.64 978 952 187.8
B 12 111 24199 123.79 978 952 187.8
C 14 238 150967 668.0 949 952 224.6
C 2 16 113295 500.25 949 952 224.6
C 8 208 10671 43.28 949 952 224.6
D 1 52 1988546 8991.05 927 901 221.1
D 2 250 158491 712.85 927 901 221.1
D 2 234 29191 127.97 927 901 221.1

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