ASTROSAT CZTI

Data Quality Report

Orbit 22440

Creation date: 2024-06-27T18:41:00.933014
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/AS1A07_056T01_9000003330_22440cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22440cztM0_level2_quad_clean.evt
Size (bytes)459,907,200130,677,120
Size438.6 MB 124.6 MB
Events in quadrant A3,241,767875,384
Events in quadrant B3,475,110896,990
Events in quadrant C3,258,940855,587
Events in quadrant D3,471,680837,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145431
B0151881
C0145651
D0154351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70671311.853686%
B70681892.674024%
C70681311.853424%
D7068901.273345%

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 7207 7068 0 0 0.00% 0.00%
B 7208 7069 9 9 0.12% 0.13%
C 7208 7069 0 0 0.00% 0.00%
D 7208 7069 13 13 0.18% 0.18%

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 3 1 13989 78.23 834 814 168.4
A 15 174 13380 74.61 834 814 168.4
A 13 254 9459 51.33 834 814 168.4
B 10 245 144108 899.32 831 808 159.3
B 3 64 32661 199.9 831 808 159.3
B 5 172 25327 153.88 831 808 159.3
C 14 238 126176 679.89 795 797 184.4
C 10 22 17321 89.6 795 797 184.4
C 9 54 6764 32.36 795 797 184.4
D 7 223 205457 1036.69 808 780 197.4
D 1 52 180674 911.16 808 780 197.4
D 13 172 29273 144.31 808 780 197.4

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