ASTROSAT CZTI

Data Quality Report

Orbit 20160620_G05_246T02_9000000504_level2

Creation date: 2025-10-31T00:17:53.501256
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/AS1G05_246T02_9000000504cztM0_level2.fits modeM0/AS1G05_246T02_9000000504cztM0_level2_quad_clean.evt
Size (bytes)563,486,400549,178,560
Size537.4 MB 523.7 MB
Events in quadrant A3,041,1043,142,077
Events in quadrant B2,977,9663,161,820
Events in quadrant C3,057,5003,033,533
Events in quadrant D4,071,8023,378,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01497730
B01238180
C01171710
D01381250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011580
B011580
C011580
D011580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5709416762.935510%
B570929861.727037%
C570916251.094743%
D5709020603.608338%

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 74235 57096 0 0 0.00% 0.00%
B 74235 57086 0 0 0.00% 0.00%
C 74235 57096 0 0 0.00% 0.00%
D 74235 57070 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 2940 10.59 790 733 208.5
A 7 110 2603 8.97 790 733 208.5
A 9 19 2279 7.42 790 733 208.5
B 2 9 2616 11.71 786 745 159.8
B 12 226 2166 8.89 786 745 159.8
B 14 254 2088 8.4 786 745 159.8
C 1 81 2218 6.81 806 741 217.0
C 1 80 2175 6.61 806 741 217.0
C 12 241 2142 6.46 806 741 217.0
D 6 231 2436 5.05 1177 1111 262.6
D -1 -1 -1 -1.0 1177 1111 262.6
D -1 -1 -1 -1.0 1177 1111 262.6

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