ASTROSAT CZTI

Data Quality Report

Orbit 17401

Creation date: 2024-06-27T17:36:03.115610
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/AS1T03_030T01_9000002574_17401cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17401cztM0_level2_quad_clean.evt
Size (bytes)606,994,56090,288,000
Size578.9 MB 86.1 MB
Events in quadrant A3,212,893608,110
Events in quadrant B3,504,122605,882
Events in quadrant C3,675,198577,887
Events in quadrant D7,529,327467,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140041
B0147201
C0148941
D0270971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6807230.337887%
B6807680.998972%
C6807540.793301%
D6808155722.870153%

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 7537 6808 1 1 0.01% 0.01%
B 7537 6808 28 28 0.37% 0.41%
C 7537 6808 0 0 0.00% 0.00%
D 7538 6809 1259 1259 16.70% 18.49%

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 4 2 18101 102.68 831 813 168.4
A 0 226 7397 39.11 831 813 168.4
A 12 194 6216 32.09 831 813 168.4
B 0 197 131869 821.73 827 807 159.5
B 7 220 43482 267.56 827 807 159.5
B 15 35 33381 204.23 827 807 159.5
C 3 233 372936 2004.46 791 798 185.7
C 14 238 121427 649.75 791 798 185.7
C 5 218 94269 503.47 791 798 185.7
D 11 176 3002457 16933.28 723 703 177.3
D 1 52 1058044 5964.6 723 703 177.3
D 13 232 482176 2716.05 723 703 177.3

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