ASTROSAT CZTI

Data Quality Report

Orbit 40820

Creation date: 2024-06-27T22:20:55.590601
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/AS1A12_099T03_9000005570_40820cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40820cztM0_level2_quad_clean.evt
Size (bytes)375,393,60087,387,840
Size358.0 MB 83.3 MB
Events in quadrant A2,924,341601,125
Events in quadrant B2,405,511619,932
Events in quadrant C2,531,704578,243
Events in quadrant D5,623,067477,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118873
B0108452
C0109492
D0203812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283210.397501%
B5283150.283930%
C5283210.397501%
D528375414.272194%

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 7105 5284 11 11 0.15% 0.21%
B 7105 5284 4 4 0.06% 0.08%
C 7105 5284 20 20 0.28% 0.38%
D 7105 5284 717 717 10.09% 13.57%

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 514785 4270.78 583 572 120.4
A 2 79 45121 370.0 583 572 120.4
A 6 10 35952 293.84 583 572 120.4
B 0 190 89441 778.45 584 569 114.2
B 5 255 17445 147.82 584 569 114.2
B 12 111 14178 119.2 584 569 114.2
C 15 214 225729 1702.56 563 569 132.2
C 0 10 87051 653.94 563 569 132.2
C 1 241 12917 93.37 563 569 132.2
D 1 47 1143364 8965.84 525 511 127.5
D 2 153 852306 6682.45 525 511 127.5
D 12 79 684136 5363.13 525 511 127.5

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