ASTROSAT CZTI

Data Quality Report

Orbit 20231117_A13_037T01_9000005930_level2

Creation date: 2023-11-20T14:05:22.453994
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/AS1A13_037T01_9000005930cztM0_level2.fits modeM0/AS1A13_037T01_9000005930cztM0_level2_quad_clean.evt
Size (bytes)497,053,440495,391,680
Size474.0 MB 472.4 MB
Events in quadrant A2,918,7482,849,407
Events in quadrant B2,897,4983,033,303
Events in quadrant C2,962,6422,864,119
Events in quadrant D2,481,4242,465,149

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570380
B01181450
C01269210
D01481450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5524927084.901446%
B5524711152.018209%
C552488331.507747%
D5524825474.610122%

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 64557 55246 0 0 0.00% 0.00%
B 64557 55248 0 0 0.00% 0.00%
C 64557 55249 0 0 0.00% 0.00%
D 64557 55191 0 0 0.00% 0.00%

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 7 110 2359 8.5 761 711 193.8
A 0 29 2336 8.38 761 711 193.8
A 7 109 2249 7.93 761 711 193.8
B 2 9 2682 12.89 766 729 151.5
B 2 8 2165 9.48 766 729 151.5
B 3 17 2165 9.48 766 729 151.5
C 3 202 2244 7.54 783 728 201.1
C 1 81 2226 7.45 783 728 201.1
C 1 80 2214 7.39 783 728 201.1
D 7 3 1843 6.03 713 646 198.6
D 3 14 1836 5.99 713 646 198.6
D 10 189 1835 5.99 713 646 198.6

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