ASTROSAT CZTI

Data Quality Report

Orbit 39359

Creation date: 2024-06-27T22:03:38.945233
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_018T01_9000005470_39359cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39359cztM0_level2_quad_clean.evt
Size (bytes)360,227,52095,688,000
Size343.5 MB 91.3 MB
Events in quadrant A2,821,050653,933
Events in quadrant B2,430,562680,906
Events in quadrant C2,734,159635,130
Events in quadrant D4,937,696557,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115793
B0107332
C0114232
D0183882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5284130.246026%
B528470.132475%
C5284130.246026%
D52842795.280091%

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 7316 5285 8 8 0.11% 0.15%
B 7316 5285 3 3 0.04% 0.06%
C 7316 5285 14 14 0.19% 0.26%
D 7316 5285 314 314 4.29% 5.94%

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 421017 3460.13 602 593 121.5
A 13 248 52202 424.75 602 593 121.5
A 2 79 16418 130.24 602 593 121.5
B 5 172 68935 589.85 602 587 115.9
B 12 111 14039 116.09 602 587 115.9
B 11 111 12899 106.25 602 587 115.9
C 15 214 234975 1745.36 581 584 134.3
C 9 187 134424 996.62 581 584 134.3
C 14 254 52058 383.29 581 584 134.3
D 12 235 1801494 13127.49 565 548 137.2
D 12 227 638007 4646.58 565 548 137.2
D 2 249 113530 823.55 565 548 137.2

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