ASTROSAT CZTI

Data Quality Report

Orbit 47516

Creation date: 2024-07-11T18:22:16.929790
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/AS1C09_002T01_9000006334_47516cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47516cztM0_level2_quad_clean.evt
Size (bytes)558,737,280107,625,600
Size532.9 MB 102.6 MB
Events in quadrant A7,064,973713,094
Events in quadrant B3,391,038743,035
Events in quadrant C3,099,328725,411
Events in quadrant D6,621,688621,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259661
B0144751
C0139091
D0242571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65303325.084227%
B65301011.546708%
C6530831.271057%
D653068510.490046%

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 7605 6531 98 98 1.29% 1.50%
B 7605 6530 15 15 0.20% 0.23%
C 7605 6531 35 35 0.46% 0.54%
D 7605 6530 512 512 6.73% 7.84%

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 3817858 25080.12 732 717 152.2
A 13 248 205612 1346.24 732 717 152.2
A 9 191 105209 686.55 732 717 152.2
B 0 200 179032 1259.27 733 712 141.6
B 5 172 126641 889.29 733 712 141.6
B 0 198 61659 430.4 733 712 141.6
C 3 233 162823 955.34 724 727 169.7
C 14 254 95444 558.23 724 727 169.7
C 0 207 6955 36.71 724 727 169.7
D 2 165 2151275 12184.24 709 685 176.5
D 2 249 690421 3907.72 709 685 176.5
D 6 112 448116 2534.94 709 685 176.5

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