ASTROSAT CZTI

Data Quality Report

Orbit 11982

Creation date: 2024-06-27T16:20:52.396125
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/AS1A04_082T01_9000001772_11982cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11982cztM0_level2_quad_clean.evt
Size (bytes)489,816,000109,022,400
Size467.1 MB 104.0 MB
Events in quadrant A3,529,792720,104
Events in quadrant B4,163,293720,828
Events in quadrant C3,159,461701,695
Events in quadrant D3,517,683683,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150853
B0169132
C0141392
D0151402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68181271.862716%
B68182563.754767%
C6818660.968026%
D6818971.422705%

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 9049 6819 5 5 0.06% 0.07%
B 9049 6819 92 92 1.02% 1.35%
C 9049 6819 0 0 0.00% 0.00%
D 9049 6820 23 23 0.25% 0.34%

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 1 162 98751 571.9 848 830 171.2
A 1 178 49646 285.11 848 830 171.2
A 1 161 44754 256.54 848 830 171.2
B 4 239 609763 3822.4 840 820 159.3
B 15 204 144875 904.25 840 820 159.3
B 3 64 49612 306.27 840 820 159.3
C 13 61 5953 27.41 809 812 187.5
C 14 234 2364 8.28 809 812 187.5
C 3 202 2009 6.38 809 812 187.5
D 10 50 122702 581.53 800 782 209.7
D 8 195 85863 405.82 800 782 209.7
D 13 104 62089 292.42 800 782 209.7

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