ASTROSAT CZTI

Data Quality Report

Orbit 20210524_A10_103T02_9000004406_level2

Creation date: 2021-05-27T12:37:27.490191
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/AS1A10_103T02_9000004406cztM0_level2_bc.evt modeM0/AS1A10_103T02_9000004406cztM0_level2_quad_clean.evt
Size (bytes)2,854,560,960807,655,680
Size2.7 GB 770.2 MB
Events in quadrant A14,156,8105,325,832
Events in quadrant B29,728,1365,291,745
Events in quadrant C13,936,9165,016,104
Events in quadrant D24,755,5454,920,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011620
B011620
C011620
D011620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250810
B01779400
C01283840
D01589040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5699010271.802071%
B5699016992.981225%
C5699024324.267415%
D5699021593.788384%

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 67915 56992 35 35 0.05% 0.06%
B 67915 56992 82 82 0.12% 0.14%
C 67915 56988 10 10 0.01% 0.02%
D 67915 56992 360 360 0.53% 0.63%

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 13 1091165 1543.1 3327 3290 705.0
A 12 96 131807 182.3 3327 3290 705.0
A 8 192 111064 152.87 3327 3290 705.0
B 6 159 15266101 24829.03 3316 3255 614.7
B 0 229 531616 859.52 3316 3255 614.7
B 5 255 358589 578.04 3316 3255 614.7
C 0 10 767471 1046.14 3123 3128 730.6
C 3 233 670567 913.51 3123 3128 730.6
C 14 254 169697 227.98 3123 3128 730.6
D 8 195 5692255 7838.05 3225 3137 725.8
D 1 52 2226232 3062.82 3225 3137 725.8
D 12 227 996474 1368.55 3225 3137 725.8

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