ASTROSAT CZTI

Data Quality Report

Orbit 17370

Creation date: 2024-06-27T17:35:35.488161
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_012T02_9000002566_17370cztM0_level2.evt modeM0/AS1A05_012T02_9000002566_17370cztM0_level2_quad_clean.evt
Size (bytes)575,712,00085,184,640
Size549.0 MB 81.2 MB
Events in quadrant A3,166,486564,624
Events in quadrant B3,289,856565,894
Events in quadrant C3,321,851541,277
Events in quadrant D7,241,984479,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133121
B0136771
C0137381
D0258551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61311031.679987%
B61311262.055130%
C61311472.397651%
D6131128420.942750%

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 7426 6132 0 0 0.00% 0.00%
B 7426 6132 0 0 0.00% 0.00%
C 7426 6132 0 0 0.00% 0.00%
D 7426 6132 1057 1057 14.23% 17.24%

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 7398 40.22 823 808 163.9
A 12 194 6084 32.2 823 808 163.9
A 3 137 5625 29.4 823 808 163.9
B 15 35 52356 337.89 818 800 152.6
B 0 197 23881 151.27 818 800 152.6
B 12 111 16610 103.62 818 800 152.6
C 14 238 124085 675.72 791 798 182.5
C 3 233 90414 491.17 791 798 182.5
C 9 54 5955 28.26 791 798 182.5
D 11 176 2677518 14788.85 759 741 181.0
D 13 232 831853 4591.79 759 741 181.0
D 1 52 374354 2064.16 759 741 181.0

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