ASTROSAT CZTI

Data Quality Report

Orbit 24841

Creation date: 2024-06-27T19:10:30.216935
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/AS1A08_003T03_9000003632_24841cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24841cztM0_level2_quad_clean.evt
Size (bytes)512,262,72088,214,400
Size488.5 MB 84.1 MB
Events in quadrant A3,749,674558,687
Events in quadrant B3,604,071568,197
Events in quadrant C3,563,753531,840
Events in quadrant D4,118,586522,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152102
B0147152
C0146272
D0165812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70391412.003125%
B70391412.003125%
C70391381.960506%
D70401542.187500%

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 9209 7041 23 23 0.25% 0.33%
B 9209 7041 2 2 0.02% 0.03%
C 9209 7041 0 0 0.00% 0.00%
D 9210 7042 74 74 0.80% 1.05%

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 6 16 175496 937.81 927 912 186.2
A 13 254 10579 51.93 927 912 186.2
A 3 137 8676 41.71 927 912 186.2
B 12 111 21683 117.85 914 891 176.4
B 11 111 19873 107.59 914 891 176.4
B 14 111 18765 101.31 914 891 176.4
C 14 238 137645 670.86 873 878 203.9
C 2 16 16538 76.81 873 878 203.9
C 7 247 9467 42.13 873 878 203.9
D 1 52 423666 1973.84 883 860 214.2
D 8 195 168209 781.26 883 860 214.2
D 5 222 152602 708.4 883 860 214.2

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