ASTROSAT CZTI

Data Quality Report

Orbit 38120

Creation date: 2024-06-27T21:48:39.391324
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/AS1A11_065T21_9000005364_38120cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38120cztM0_level2_quad_clean.evt
Size (bytes)366,840,00097,640,640
Size349.8 MB 93.1 MB
Events in quadrant A3,681,686656,128
Events in quadrant B3,013,678661,766
Events in quadrant C2,885,689640,046
Events in quadrant D3,538,678585,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145103
B0129102
C0120432
D0143312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5903741.253600%
B59031322.236151%
C590380.135524%
D5903831.406065%

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 7216 5904 57 57 0.79% 0.97%
B 7216 5904 72 72 1.00% 1.22%
C 7216 5904 9 9 0.12% 0.15%
D 7216 5904 76 76 1.05% 1.29%

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 12 16 581182 4327.75 661 648 134.1
A 10 83 386534 2876.69 661 648 134.1
A 12 194 85482 632.42 661 648 134.1
B 0 229 376240 2968.36 649 632 126.5
B 5 172 41074 319.61 649 632 126.5
B 15 85 16133 122.5 649 632 126.5
C 15 214 246796 1629.01 645 649 151.1
C 3 233 59488 389.4 645 649 151.1
C 1 23 53865 352.18 645 649 151.1
D 12 235 358345 2258.56 640 620 158.4
D 1 20 158148 994.58 640 620 158.4
D 12 227 144692 909.62 640 620 158.4

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