ASTROSAT CZTI

Data Quality Report

Orbit 41328

Creation date: 2024-06-27T22:27:38.746049
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_037T01_9000005652_41328cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41328cztM0_level2_quad_clean.evt
Size (bytes)331,300,80087,488,640
Size316.0 MB 83.4 MB
Events in quadrant A2,793,550597,281
Events in quadrant B2,509,339615,657
Events in quadrant C3,219,292546,764
Events in quadrant D3,337,162526,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113313
B0109022
C0126252
D0135222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5190130.250482%
B5190140.269750%
C51902775.337187%
D51901142.196532%

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 8929 5192 5 5 0.06% 0.10%
B 8929 5192 6 6 0.07% 0.12%
C 8929 5192 273 273 3.06% 5.26%
D 8929 5192 97 97 1.09% 1.87%

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 499077 4153.5 588 577 120.0
A 12 189 13108 104.41 588 577 120.0
A 13 6 7638 58.83 588 577 120.0
B 5 255 104327 907.41 586 571 114.3
B 0 190 85095 739.22 586 571 114.3
B 12 111 14897 125.29 586 571 114.3
C 0 10 825967 6336.46 551 555 130.3
C 15 214 215571 1650.62 551 555 130.3
C 9 54 25609 192.33 551 555 130.3
D 2 120 422465 3035.63 562 545 139.0
D 1 52 316425 2272.7 562 545 139.0
D 13 249 169628 1216.52 562 545 139.0

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