ASTROSAT CZTI

Data Quality Report

Orbit 17658

Creation date: 2024-06-27T17:39:12.708143
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/AS1A05_118T02_9000002612_17658cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17658cztM0_level2_quad_clean.evt
Size (bytes)477,970,56097,390,080
Size455.8 MB 92.9 MB
Events in quadrant A3,202,047637,291
Events in quadrant B3,345,581652,824
Events in quadrant C3,663,869614,364
Events in quadrant D3,824,189593,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134142
B0138582
C0149482
D0156222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481180.277735%
B6481410.632618%
C6481761.172659%
D64812503.857429%

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 7796 6482 0 0 0.00% 0.00%
B 7796 6482 3 3 0.04% 0.05%
C 7796 6482 0 0 0.00% 0.00%
D 7796 6482 117 117 1.50% 1.80%

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 0 226 7436 39.92 832 816 165.8
A 12 194 6008 31.31 832 816 165.8
A 3 137 5843 30.31 832 816 165.8
B 14 1 57295 361.38 830 812 156.3
B 10 245 25691 159.18 830 812 156.3
B 12 111 18095 110.58 830 812 156.3
C 3 233 448637 2440.28 792 798 183.5
C 14 238 125697 680.58 792 798 183.5
C 13 61 5692 26.67 792 798 183.5
D 1 52 729594 3865.26 783 760 188.6
D 13 189 129456 682.52 783 760 188.6
D 2 234 23559 120.91 783 760 188.6

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