ASTROSAT CZTI

Data Quality Report

Orbit 17346

Creation date: 2024-06-27T17:35:16.739352
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_025T16_9000002560_17346cztM0_level2.evt modeM0/AS1A05_025T16_9000002560_17346cztM0_level2_quad_clean.evt
Size (bytes)69,802,56021,121,920
Size66.6 MB 20.1 MB
Events in quadrant A500,625141,445
Events in quadrant B515,885142,276
Events in quadrant C507,881134,620
Events in quadrant D508,558134,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023110
B023220
C023130
D023650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114300.000000%
B114420.174825%
C114440.349650%
D114420.174825%

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 1143 1143 0 0 0.00% 0.00%
B 1144 1144 0 0 0.00% 0.00%
C 1144 1144 0 0 0.00% 0.00%
D 1144 1144 1 1 0.09% 0.09%

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 0 226 1118 34.62 129 127 28.6
A 3 137 1058 32.52 129 127 28.6
A 15 174 930 28.05 129 127 28.6
B 12 111 3161 107.88 131 127 28.1
B 11 111 2757 93.52 131 127 28.1
B 14 111 2465 83.13 131 127 28.1
C 14 238 18855 598.76 124 124 31.3
C 3 233 3724 115.08 124 124 31.3
C 13 61 952 26.47 124 124 31.3
D 1 52 23676 740.31 123 119 31.8
D 13 189 5051 155.0 123 119 31.8
D 7 38 4759 145.82 123 119 31.8

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