ASTROSAT CZTI

Data Quality Report

Orbit 10738

Creation date: 2024-06-27T16:03:07.133059
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/AS1A03_078T01_9000001546_10738cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10738cztM0_level2_quad_clean.evt
Size (bytes)583,712,64072,426,240
Size556.7 MB 69.1 MB
Events in quadrant A4,735,804441,302
Events in quadrant B4,063,263445,722
Events in quadrant C3,240,290448,298
Events in quadrant D5,209,774415,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183623
B0163122
C0137762
D0200222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63324386.917246%
B63322764.358812%
C63321041.642451%
D633263910.091598%

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 8747 6333 117 117 1.34% 1.85%
B 8747 6333 84 84 0.96% 1.33%
C 8747 6333 1 1 0.01% 0.02%
D 8747 6333 459 459 5.25% 7.25%

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 15 239 1478842 8890.24 829 815 166.3
A 14 254 28252 165.03 829 815 166.3
A 11 29 11834 66.28 829 815 166.3
B 4 239 654097 4104.01 836 816 159.2
B 15 204 46839 289.12 836 816 159.2
B 0 219 41505 255.61 836 816 159.2
C 14 234 13811 68.21 828 836 190.2
C 13 61 6036 27.33 828 836 190.2
C 3 202 2033 6.29 828 836 190.2
D 2 16 896142 4755.5 790 771 188.3
D 1 52 870739 4620.57 790 771 188.3
D 13 249 135820 717.27 790 771 188.3

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