ASTROSAT CZTI

Data Quality Report

Orbit 25709

Creation date: 2024-06-27T19:20:38.876569
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_008T06_9000003748_25709cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25709cztM0_level2_quad_clean.evt
Size (bytes)521,879,040105,408,000
Size497.7 MB 100.5 MB
Events in quadrant A4,305,958655,449
Events in quadrant B3,353,230733,395
Events in quadrant C3,321,087691,597
Events in quadrant D4,387,579662,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169750
B0140690
C0140030
D0175920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64395328.262153%
B6439781.211368%
C64391221.894704%
D64391562.422736%

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 7594 6440 478 478 6.29% 7.42%
B 7594 6440 1 1 0.01% 0.02%
C 7594 6440 2 2 0.03% 0.03%
D 7594 6440 97 97 1.28% 1.51%

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 0 13 1294144 8251.81 781 767 156.7
A 13 254 8850 51.57 781 767 156.7
A 3 137 7033 39.98 781 767 156.7
B 0 245 30188 188.55 826 807 155.8
B 0 219 27390 170.6 826 807 155.8
B 15 33 27378 170.52 826 807 155.8
C 14 238 127794 680.22 797 802 186.7
C 3 233 85094 451.5 797 802 186.7
C 13 61 5526 25.3 797 802 186.7
D 7 80 635069 3274.59 791 769 193.7
D 8 195 427561 2203.33 791 769 193.7
D 1 52 136836 702.45 791 769 193.7

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