ASTROSAT CZTI

Data Quality Report

Orbit 11250

Creation date: 2024-06-27T16:10:19.976204
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/AS1T01_202T01_9000001640_11250cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11250cztM0_level2_quad_clean.evt
Size (bytes)741,326,400105,022,080
Size707.0 MB 100.2 MB
Events in quadrant A3,516,456780,806
Events in quadrant B3,945,511774,513
Events in quadrant C10,446,956439,094
Events in quadrant D4,103,425732,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145982
B0159391
C0355121
D0163751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64802083.209877%
B64803124.814815%
C6480390660.277778%
D64803405.246914%

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 6660 6481 27 27 0.41% 0.42%
B 6660 6481 60 60 0.90% 0.93%
C 6660 6481 2420 2420 36.34% 37.34%
D 6660 6481 190 190 2.85% 2.93%

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 14 238 218673 1202.97 806 788 181.1
A 8 5 82368 450.41 806 788 181.1
A 8 15 30702 165.16 806 788 181.1
B 4 239 602685 3692.56 807 790 163.0
B 11 51 89813 546.14 807 790 163.0
B 15 204 44347 267.21 807 790 163.0
C 4 254 8418467 68073.09 516 522 123.7
C 4 238 13090 101.63 516 522 123.7
C 13 61 3732 25.96 516 522 123.7
D 13 152 477727 2183.75 766 751 218.4
D 8 195 286849 1309.85 766 751 218.4
D 5 222 95573 434.13 766 751 218.4

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