ASTROSAT CZTI

Data Quality Report

Orbit 19354

Creation date: 2024-06-27T18:01:44.914332
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/AS1A05_204T01_9000002856_19354cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19354cztM0_level2_quad_clean.evt
Size (bytes)512,248,32099,483,840
Size488.5 MB 94.9 MB
Events in quadrant A3,218,830669,371
Events in quadrant B3,393,064668,137
Events in quadrant C3,255,754641,683
Events in quadrant D5,212,264587,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135952
B0141602
C0136172
D0199012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385801.252937%
B63851181.848081%
C63851372.145654%
D638567510.571652%

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 7540 6386 0 0 0.00% 0.00%
B 7540 6385 29 29 0.38% 0.45%
C 7540 6385 0 0 0.00% 0.00%
D 7540 6385 523 523 6.94% 8.19%

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 13 254 8367 45.06 833 815 167.6
A 0 226 7324 38.83 833 815 167.6
A 3 137 6217 32.23 833 815 167.6
B 3 64 91361 588.88 819 798 153.8
B 0 190 35046 222.69 819 798 153.8
B 12 111 17946 111.5 819 798 153.8
C 14 238 125930 669.66 799 806 186.8
C 9 160 6153 28.62 799 806 186.8
C 13 61 5623 25.78 799 806 186.8
D 10 66 1182864 6263.2 783 764 188.7
D 7 238 771618 4084.27 783 764 188.7
D 11 176 137466 724.3 783 764 188.7

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