ASTROSAT CZTI

Data Quality Report

Orbit 41985

Creation date: 2024-06-27T22:35:22.397658
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_104T01_9000005728_41985cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41985cztM0_level2_quad_clean.evt
Size (bytes)310,754,88089,588,160
Size296.4 MB 85.4 MB
Events in quadrant A2,864,303601,392
Events in quadrant B2,501,454619,277
Events in quadrant C2,510,067584,386
Events in quadrant D3,200,659525,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117443
B0111862
C0109872
D0134282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5471130.237617%
B5471140.255895%
C547120.036556%
D54711993.637361%

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 7174 5472 5 5 0.07% 0.09%
B 7174 5472 3 3 0.04% 0.05%
C 7174 5472 0 0 0.00% 0.00%
D 7174 5472 158 158 2.20% 2.89%

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 525050 4280.54 598 587 122.5
A 2 79 21606 171.55 598 587 122.5
A 15 223 9115 69.6 598 587 122.5
B 0 190 86764 749.18 590 573 115.0
B 0 156 50950 437.88 590 573 115.0
B 3 112 24443 207.48 590 573 115.0
C 15 214 226350 1668.7 580 583 135.3
C 9 54 21076 151.47 580 583 135.3
C 13 61 3792 23.72 580 583 135.3
D 13 249 423456 2987.8 572 555 141.5
D 12 250 160207 1127.94 572 555 141.5
D 1 52 145505 1024.07 572 555 141.5

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