ASTROSAT CZTI

Data Quality Report

Orbit 23289

Creation date: 2024-06-27T18:52:24.915232
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/AS1C05_012T03_9000003442_23289cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23289cztM0_level2_quad_clean.evt
Size (bytes)508,043,520143,778,240
Size484.5 MB 137.1 MB
Events in quadrant A3,313,4941,002,131
Events in quadrant B3,287,9601,004,051
Events in quadrant C3,350,819958,464
Events in quadrant D4,997,822941,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138942
B0137072
C0138322
D0190842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433490.761697%
B6433510.792787%
C6433590.917146%
D64331422.207368%

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 7763 6434 2 2 0.03% 0.03%
B 7763 6434 0 0 0.00% 0.00%
C 7763 6434 0 0 0.00% 0.00%
D 7763 6433 135 135 1.74% 2.10%

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 13 254 9940 53.99 857 844 168.5
A 4 208 7410 38.97 857 844 168.5
A 0 226 7353 38.63 857 844 168.5
B 0 229 19077 119.27 836 818 153.1
B 12 111 17403 108.34 836 818 153.1
B 11 111 15728 97.4 836 818 153.1
C 14 238 131364 702.98 817 822 185.7
C 7 247 12831 64.67 817 822 185.7
C 0 239 12421 62.46 817 822 185.7
D 7 238 1035169 5163.24 837 813 200.3
D 1 52 383071 1908.13 837 813 200.3
D 12 233 298065 1483.8 837 813 200.3

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