ASTROSAT CZTI

Data Quality Report

Orbit 24866

Creation date: 2024-06-27T19:10:45.405484
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_027T02_9000003640_24866cztM0_level2.evt modeM0/AS1A07_027T02_9000003640_24866cztM0_level2_quad_clean.evt
Size (bytes)507,666,240117,535,680
Size484.1 MB 112.1 MB
Events in quadrant A3,341,211786,141
Events in quadrant B3,393,853809,332
Events in quadrant C3,543,469783,106
Events in quadrant D4,675,395747,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137972
B0141252
C0144112
D0180862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6208831.336985%
B6208450.724871%
C6208991.594716%
D62082473.978737%

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 7498 6209 35 35 0.47% 0.56%
B 7498 6209 0 0 0.00% 0.00%
C 7498 6209 2 2 0.03% 0.03%
D 7498 6209 161 161 2.15% 2.59%

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 96 64204 384.52 834 818 164.8
A 6 16 38506 228.62 834 818 164.8
A 8 160 10194 56.87 834 818 164.8
B 0 189 60669 385.02 837 817 155.5
B 0 190 50937 322.41 837 817 155.5
B 12 111 18347 112.77 837 817 155.5
C 14 238 132625 689.71 827 835 191.1
C 2 16 84132 435.93 827 835 191.1
C 7 247 80250 415.61 827 835 191.1
D 12 218 902794 4580.73 824 804 196.9
D 1 52 449390 2278.13 824 804 196.9
D 5 222 70075 351.79 824 804 196.9

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