ASTROSAT CZTI

Data Quality Report

Orbit 25463

Creation date: 2024-06-27T19:17:56.703039
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/AS1A09_085T02_9000003716_25463cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25463cztM0_level2_quad_clean.evt
Size (bytes)545,166,720103,279,680
Size519.9 MB 98.5 MB
Events in quadrant A3,840,614693,022
Events in quadrant B3,147,430692,875
Events in quadrant C3,379,810667,063
Events in quadrant D5,718,644638,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155430
B0131020
C0138870
D0210990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62621041.660811%
B6263881.405077%
C62631812.889989%
D62633936.274948%

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 7352 6263 3 3 0.04% 0.05%
B 7353 6264 0 0 0.00% 0.00%
C 7353 6264 22 22 0.30% 0.35%
D 7353 6264 297 297 4.04% 4.74%

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 664771 4037.17 823 807 164.5
A 13 254 10992 61.93 823 807 164.5
A 3 137 7174 38.71 823 807 164.5
B 12 111 18152 113.69 802 783 152.8
B 11 111 16483 102.76 802 783 152.8
B 14 111 15026 93.23 802 783 152.8
C 9 54 214707 1178.93 779 784 181.5
C 14 238 126590 693.31 779 784 181.5
C 13 61 5187 24.26 779 784 181.5
D 1 52 1873708 9880.01 784 762 189.6
D 7 238 680325 3584.78 784 762 189.6
D 8 195 106637 558.5 784 762 189.6

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