ASTROSAT CZTI

Data Quality Report

Orbit 35888

Creation date: 2022-06-08T22:16:45.372886
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/AS1A11_080T01_9000005146_35888cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35888cztM0_level2_quad_clean.evt
Size (bytes)553,279,68083,468,160
Size527.6 MB 79.6 MB
Events in quadrant A2,724,588561,288
Events in quadrant B5,995,972524,292
Events in quadrant C2,861,661549,455
Events in quadrant D4,807,618513,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112673
B0212252
C0114302
D0179722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540180.148121%
B5401131224.291798%
C5401310.573968%
D54012454.536197%

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 7044 5402 0 0 0.00% 0.00%
B 7044 5402 1223 1223 17.36% 22.64%
C 7044 5402 21 21 0.30% 0.39%
D 7044 5402 236 236 3.35% 4.37%

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 165938 1222.11 655 643 135.3
A 13 6 12570 88.18 655 643 135.3
A 13 254 9682 66.83 655 643 135.3
B 5 63 3146339 28801.92 573 561 109.2
B 5 172 417007 3812.87 573 561 109.2
B 5 255 113386 1033.0 573 561 109.2
C 15 214 226402 1515.45 634 641 149.0
C 0 10 142777 954.11 634 641 149.0
C 0 207 21713 141.45 634 641 149.0
D 12 227 1099833 7113.35 625 610 154.5
D 8 195 486371 3143.48 625 610 154.5
D 13 249 449716 2906.28 625 610 154.5

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