ASTROSAT CZTI

Data Quality Report

Orbit 31267

Creation date: 2024-06-27T20:25:58.141104
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/AS1T04_021T01_9000004526_31267cztM0_level2.evt modeM0/AS1T04_021T01_9000004526_31267cztM0_level2_quad_clean.evt
Size (bytes)552,499,200124,300,800
Size526.9 MB 118.5 MB
Events in quadrant A3,219,124864,743
Events in quadrant B5,126,117845,597
Events in quadrant C3,847,106819,925
Events in quadrant D4,130,164811,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131431
B0191271
C0155411
D0162561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6063981.616362%
B60642143.529024%
C60642183.594987%
D60641742.869393%

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 7333 6064 0 0 0.00% 0.00%
B 7334 6065 34 34 0.46% 0.56%
C 7334 6065 21 21 0.29% 0.35%
D 7334 6065 74 74 1.01% 1.22%

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 11068 62.31 834 821 164.4
A 3 137 7528 40.78 834 821 164.4
A 0 226 7101 38.19 834 821 164.4
B 6 159 1630679 10775.63 807 787 151.3
B 0 190 157208 1034.14 807 787 151.3
B 4 80 60913 397.51 807 787 151.3
C 3 233 579258 3240.42 779 785 178.5
C 14 238 129722 722.26 779 785 178.5
C 0 10 76838 426.02 779 785 178.5
D 8 195 779177 3770.32 792 782 206.5
D 12 233 199756 963.77 792 782 206.5
D 2 250 105590 507.66 792 782 206.5

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