ASTROSAT CZTI

Data Quality Report

Orbit 00281

Creation date: 2024-06-27T13:58:41.490592
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/AS1P01_126T01_9000000030_00281cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00281cztM0_level2_quad_clean.evt
Size (bytes)874,532,16053,311,680
Size834.0 MB 50.8 MB
Events in quadrant A6,960,711306,527
Events in quadrant B6,771,555311,760
Events in quadrant C6,255,932302,010
Events in quadrant D6,119,025295,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247032
B0241201
C0226321
D0222101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568370.123174%
B568320.035193%
C568330.052789%
D568340.070385%

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 7388 5684 159 159 2.15% 2.80%
B 7388 5684 93 93 1.26% 1.64%
C 7388 5684 38 38 0.51% 0.67%
D 7388 5684 40 40 0.54% 0.70%

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 15 127 283599 752.55 1699 1681 374.6
A 15 66 38833 99.17 1699 1681 374.6
A 8 65 38149 97.35 1699 1681 374.6
B 5 176 158319 390.16 1712 1725 401.4
B 8 54 20163 45.94 1712 1725 401.4
B 5 46 14404 31.59 1712 1725 401.4
C 3 159 20913 43.13 1586 1643 446.7
C 9 68 4527 6.46 1586 1643 446.7
C 9 148 4104 5.51 1586 1643 446.7
D 10 171 118118 240.78 1515 1576 484.0
D 13 216 85116 172.6 1515 1576 484.0
D 1 5 61741 124.3 1515 1576 484.0

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