ASTROSAT CZTI

Data Quality Report

Orbit 31009

Creation date: 2024-06-27T20:22:15.058268
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_071T52_9000004480_31009cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31009cztM0_level2_quad_clean.evt
Size (bytes)587,194,56078,739,200
Size560.0 MB 75.1 MB
Events in quadrant A3,463,334488,311
Events in quadrant B5,612,397486,370
Events in quadrant C4,158,683452,335
Events in quadrant D4,061,554456,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147892
B0218902
C0167672
D0167142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7188390.542571%
B71871371.906220%
C71872984.146375%
D7187811.127035%

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 7718 7189 0 0 0.00% 0.00%
B 7717 7187 2 2 0.03% 0.03%
C 7717 7188 137 137 1.78% 1.91%
D 7717 7188 61 61 0.79% 0.85%

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 13 254 13458 69.62 897 877 180.7
A 3 137 9441 47.39 897 877 180.7
A 0 226 7519 36.76 897 877 180.7
B 6 159 1975206 11410.48 888 865 173.0
B 0 183 75043 428.7 888 865 173.0
B 0 190 29495 165.46 888 865 173.0
C 0 10 682738 3430.87 841 846 198.8
C 14 238 135631 678.16 841 846 198.8
C 10 22 31795 155.72 841 846 198.8
D 8 195 434445 2114.08 855 831 205.1
D 12 218 194989 946.62 855 831 205.1
D 7 69 100548 486.17 855 831 205.1

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