ASTROSAT CZTI

Data Quality Report

Orbit 50506

Creation date: 2025-01-30T11:24:07.895114
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/AS1T05_239T01_9000006444_50506cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50506cztM0_level2_quad_clean.evt
Size (bytes)699,004,80091,365,120
Size666.6 MB 87.1 MB
Events in quadrant A6,116,648579,657
Events in quadrant B3,971,793695,845
Events in quadrant C10,057,571485,388
Events in quadrant D5,220,700546,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228192
B0162622
C0344952
D0200272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657178611.961650%
B65721271.932441%
C6572172126.186853%
D65725177.866707%

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 7726 6571 758 758 9.81% 11.54%
B 7727 6572 61 61 0.79% 0.93%
C 7726 6571 1640 1640 21.23% 24.96%
D 7727 6572 498 498 6.44% 7.58%

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 10 253 2179534 13066.81 681 666 166.7
A 3 130 543759 3256.96 681 666 166.7
A 4 249 138027 823.76 681 666 166.7
B 4 170 515366 3357.87 713 688 153.3
B 7 0 121930 791.01 713 688 153.3
B 1 238 114716 743.94 713 688 153.3
C 12 247 2167127 11819.0 647 641 183.3
C 15 235 1703017 9287.11 647 641 183.3
C 15 196 923800 5036.18 647 641 183.3
D 2 249 410885 2209.94 662 640 185.6
D 15 184 402999 2167.46 662 640 185.6
D 7 96 343232 1845.5 662 640 185.6

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