ASTROSAT CZTI

Data Quality Report

Orbit 20161007_G06_129T01_9000000718_level2

Creation date: 2025-11-06T22:26:42.645270
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/AS1G06_129T01_9000000718cztM0_level2.fits modeM0/AS1G06_129T01_9000000718cztM0_level2_quad_clean.evt
Size (bytes)583,871,040586,356,480
Size556.8 MB 559.2 MB
Events in quadrant A3,551,2783,539,170
Events in quadrant B3,370,0863,497,416
Events in quadrant C3,383,7163,246,629
Events in quadrant D2,997,9903,096,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013040
B013040
C013040
D013040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01318650
B01539420
C01547310
D01377600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638257511.176655%
B6381317702.773729%
C6383225163.941597%
D638137881.234858%

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 73527 63849 0 0 0.00% 0.00%
B 73527 63780 0 0 0.00% 0.00%
C 73527 63580 0 0 0.00% 0.00%
D 73527 63852 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 14 188 3485 11.05 919 855 238.1
A 0 29 3444 10.87 919 855 238.1
A 7 110 3092 9.39 919 855 238.1
B 2 9 3009 12.18 887 841 178.0
B 12 226 2359 8.53 887 841 178.0
B 14 254 2293 8.16 887 841 178.0
C 1 80 2483 7.03 892 820 236.7
C 12 241 2421 6.76 892 820 236.7
C 1 81 2385 6.61 892 820 236.7
D 11 82 2270 6.5 854 772 230.5
D 3 14 2254 6.43 854 772 230.5
D 6 231 2229 6.32 854 772 230.5

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