ASTROSAT CZTI

Data Quality Report

Orbit 10435

Creation date: 2024-06-27T15:59:51.491334
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_066T01_9000001510_10435cztM0_level2.evt modeM0/AS1G07_066T01_9000001510_10435cztM0_level2_quad_clean.evt
Size (bytes)2,397,320,640374,201,280
Size2.2 GB 356.9 MB
Events in quadrant A21,984,6532,325,462
Events in quadrant B18,067,8792,385,147
Events in quadrant C12,396,3402,413,996
Events in quadrant D18,276,8212,291,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05680
B05680
C05680
D05680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0836735
B0725495
C0567405
D0730135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2788418526.641802%
B2788415645.608951%
C278841230.441113%
D278844911.760866%

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 31509 27885 1345 1345 4.27% 4.82%
B 31509 27884 977 977 3.10% 3.50%
C 31509 27886 13 13 0.04% 0.05%
D 31509 27886 315 315 1.00% 1.13%

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 13 251 8992632 14073.04 3151 3080 638.8
A 3 80 666618 1038.76 3151 3080 638.8
A 15 174 151933 233.03 3151 3080 638.8
B 4 239 5137134 8613.92 3163 3085 596.0
B 0 214 183018 301.89 3163 3085 596.0
B 11 51 130416 213.64 3163 3085 596.0
C 14 234 97228 129.62 3145 3159 725.7
C 13 61 23859 28.52 3145 3159 725.7
C 14 67 20717 24.19 3145 3159 725.7
D 8 195 2531584 3404.14 3096 3013 742.8
D 1 20 910586 1221.84 3096 3013 742.8
D 5 222 582579 780.25 3096 3013 742.8

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