ASTROSAT CZTI

Data Quality Report

Orbit 20170512_G07_010T01_9000001220_level2

Creation date: 2025-11-13T14:11:56.007869
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/AS1G07_010T01_9000001220cztM0_level2.fits modeM0/AS1G07_010T01_9000001220cztM0_level2_quad_clean.evt
Size (bytes)527,996,160434,456,640
Size503.5 MB 414.3 MB
Events in quadrant A3,205,5642,440,654
Events in quadrant B3,101,3562,460,520
Events in quadrant C3,187,9002,350,169
Events in quadrant D2,654,4162,065,309

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011340
B011340
C011360
D011360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01249720
B01181790
C01174570
D01743130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559749501.697217%
B559817751.384398%
C559806321.128975%
D5597241257.369756%

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 64125 55991 0 0 0.00% 0.00%
B 64125 56001 0 0 0.00% 0.00%
C 64125 55998 0 0 0.00% 0.00%
D 64125 55986 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 0 29 3148 11.26 833 775 210.8
A 7 110 2627 8.79 833 775 210.8
A 0 30 2392 7.67 833 775 210.8
B 2 9 2764 12.11 817 776 164.2
B 14 254 2090 8.0 817 776 164.2
B 3 17 2068 7.87 817 776 164.2
C 1 81 2321 6.91 842 781 222.9
C 1 80 2315 6.88 842 781 222.9
C 12 241 2222 6.47 842 781 222.9
D 6 231 2040 6.64 757 689 203.4
D 1 19 1895 5.93 757 689 203.4
D 10 189 1851 5.71 757 689 203.4

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