ASTROSAT CZTI

Data Quality Report

Orbit 38163

Creation date: 2024-06-27T21:49:13.311560
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/AS1A07_145T01_9000005370_38163cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38163cztM0_level2_quad_clean.evt
Size (bytes)370,612,80099,097,920
Size353.4 MB 94.5 MB
Events in quadrant A3,114,061670,868
Events in quadrant B2,720,380683,654
Events in quadrant C2,756,019647,658
Events in quadrant D4,671,485587,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127283
B0120992
C0118232
D0178942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872150.255450%
B5872210.357629%
C587250.085150%
D58722083.542234%

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 7185 5873 4 4 0.06% 0.07%
B 7185 5873 8 8 0.11% 0.14%
C 7185 5873 2 2 0.03% 0.03%
D 7185 5873 190 190 2.64% 3.24%

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 10 83 397240 2973.55 660 648 133.4
A 9 143 73160 543.68 660 648 133.4
A 12 189 65491 486.18 660 648 133.4
B 5 172 70999 555.91 653 636 126.6
B 4 171 40385 314.04 653 636 126.6
B 15 85 24279 186.79 653 636 126.6
C 15 214 243016 1631.98 639 644 148.5
C 5 250 7172 43.96 639 644 148.5
C 3 233 6933 42.35 639 644 148.5
D 12 235 1269488 8173.65 635 616 155.2
D 7 38 415240 2670.87 635 616 155.2
D 1 52 245934 1580.25 635 616 155.2

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