ASTROSAT CZTI

Data Quality Report

Orbit 03837

Creation date: 2024-06-27T14:34:11.573916
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/AS1G05_189T01_9000000492_03837cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03837cztM0_level2_quad_clean.evt
Size (bytes)463,731,84068,676,480
Size442.2 MB 65.5 MB
Events in quadrant A3,646,321418,751
Events in quadrant B3,347,075424,460
Events in quadrant C3,471,762407,533
Events in quadrant D3,158,407396,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147092
B0137461
C0145571
D0137691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61901562.520194%
B61901282.067851%
C61902954.765751%
D61901512.439418%

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 7285 6190 29 29 0.40% 0.47%
B 7285 6190 1 1 0.01% 0.02%
C 7285 6190 211 211 2.90% 3.41%
D 7285 6190 23 23 0.32% 0.37%

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 15 234 645809 4166.44 757 743 154.8
A 13 251 73121 467.49 757 743 154.8
A 0 50 9916 59.25 757 743 154.8
B 15 204 349688 2349.01 762 745 148.5
B 14 167 21377 138.89 762 745 148.5
B 12 111 12913 81.91 762 745 148.5
C 1 241 648931 3888.65 709 713 166.7
C 10 65 20144 116.57 709 713 166.7
C 1 16 15523 88.85 709 713 166.7
D 13 248 171624 969.36 725 704 176.3
D 2 14 91879 517.09 725 704 176.3
D 11 132 32627 181.05 725 704 176.3

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