ASTROSAT CZTI

Data Quality Report

Orbit 38372

Creation date: 2024-06-27T21:52:02.419653
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/AS1A12_006T08_9000005378_38372cztM0_level2.fits modeM0/AS1A12_006T08_9000005378_38372cztM0_level2_quad_clean.evt
Size (bytes)98,199,36017,291,520
Size93.7 MB 16.5 MB
Events in quadrant A611,041122,892
Events in quadrant B681,161119,701
Events in quadrant C519,097122,116
Events in quadrant D1,750,03787,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025102
B025501
C020921
D058381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91160.658617%
B911839.110867%
C91150.548847%
D91135038.419319%

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 911 911 3 3 0.33% 0.33%
B 911 911 45 45 4.94% 4.94%
C 911 911 1 1 0.11% 0.11%
D 911 911 312 312 34.25% 34.25%

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 10 83 118187 4555.92 120 118 25.9
A 12 189 11703 447.03 120 118 25.9
A 12 16 6408 242.71 120 118 25.9
B 0 183 206080 8558.75 117 114 24.1
B 0 230 4693 190.26 117 114 24.1
B 0 229 3362 134.95 117 114 24.1
C 15 214 43154 1475.68 118 119 29.2
C 0 10 5895 198.06 118 119 29.2
C 14 254 3340 110.45 118 119 29.2
D 10 203 1173816 39697.21 112 108 29.6
D 13 171 53262 1797.78 112 108 29.6
D 12 227 47609 1606.58 112 108 29.6

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