ASTROSAT CZTI

Data Quality Report

Orbit 22439

Creation date: 2024-06-27T18:40:59.889547
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/AS1A07_056T01_9000003330_22439cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22439cztM0_level2_quad_clean.evt
Size (bytes)411,874,560122,512,320
Size392.8 MB 116.8 MB
Events in quadrant A2,955,801821,727
Events in quadrant B3,066,147843,219
Events in quadrant C3,004,739804,945
Events in quadrant D3,002,343785,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133091
B0135441
C0134611
D0138181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6535190.290742%
B6536600.917993%
C6536711.086291%
D653680.122399%

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 7070 6536 0 0 0.00% 0.00%
B 7071 6537 11 11 0.16% 0.17%
C 7071 6537 0 0 0.00% 0.00%
D 7071 6537 1 1 0.01% 0.02%

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 15 174 17342 109.17 760 743 152.0
A 3 1 11058 67.84 760 743 152.0
A 13 254 9181 55.5 760 743 152.0
B 5 172 60241 411.17 760 740 144.7
B 12 111 17823 118.05 760 740 144.7
B 4 173 16749 110.63 760 740 144.7
C 14 238 118051 696.44 728 730 168.5
C 10 22 46949 274.36 728 730 168.5
C 13 61 5182 26.43 728 730 168.5
D 1 52 152439 857.9 734 710 176.9
D 2 136 32648 180.58 734 710 176.9
D 2 234 25630 140.9 734 710 176.9

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