ASTROSAT CZTI

Data Quality Report

Orbit 10420

Creation date: 2024-06-27T15:59:11.904114
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_046T01_9000001506_10420cztM0_level2.evt modeM0/AS1G07_046T01_9000001506_10420cztM0_level2_quad_clean.evt
Size (bytes)2,096,688,960322,130,880
Size2.0 GB 307.2 MB
Events in quadrant A13,422,6072,001,952
Events in quadrant B17,080,3542,005,822
Events in quadrant C12,406,8122,003,155
Events in quadrant D18,748,6831,869,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05858636
B06901752
C05612431
D07389686

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272832961.084925%
B2727812284.501796%
C272812080.762435%
D272768563.138290%

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 31174 27295 35 35 0.11% 0.13%
B 31174 27294 765 765 2.45% 2.80%
C 31174 27295 33 33 0.11% 0.12%
D 31174 27290 573 573 1.84% 2.10%

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 902745 1380.22 3209 3136 651.8
A 1 162 62613 91.25 3209 3136 651.8
A 13 253 31341 43.27 3209 3136 651.8
B 4 239 3306875 5449.23 3199 3124 606.3
B 10 245 991359 1630.0 3199 3124 606.3
B 11 51 107257 171.76 3199 3124 606.3
C 14 234 144470 193.42 3136 3150 730.6
C 9 68 26202 31.55 3136 3150 730.6
C 13 61 23777 28.23 3136 3150 730.6
D 8 195 2443902 3305.11 3066 2984 738.5
D 1 20 1518880 2052.59 3066 2984 738.5
D 1 52 1429811 1931.98 3066 2984 738.5

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