ASTROSAT CZTI

Data Quality Report

Orbit 21523

Creation date: 2024-06-27T18:28:57.573177
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/AS1A05_144T02_9000003176_21523cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21523cztM0_level2_quad_clean.evt
Size (bytes)460,212,48092,439,360
Size438.9 MB 88.2 MB
Events in quadrant A2,869,714608,069
Events in quadrant B2,936,596624,765
Events in quadrant C2,845,107594,197
Events in quadrant D4,896,457571,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119101
B0120791
C0118721
D0185181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5742330.574713%
B5742390.679206%
C5742570.992685%
D57423285.712295%

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 7102 5743 3 3 0.04% 0.05%
B 7102 5743 0 0 0.00% 0.00%
C 7102 5743 0 0 0.00% 0.00%
D 7102 5743 266 266 3.75% 4.63%

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 27400 181.95 736 722 146.6
A 13 254 8717 54.53 736 722 146.6
A 0 226 6454 39.09 736 722 146.6
B 0 190 20964 150.41 731 717 134.6
B 0 230 19201 137.31 731 717 134.6
B 12 111 15662 111.02 731 717 134.6
C 14 238 114789 719.77 696 701 158.5
C 3 233 14674 88.15 696 701 158.5
C 13 61 5034 27.34 696 701 158.5
D 1 52 1848513 10314.03 689 675 179.2
D 13 153 197724 1099.86 689 675 179.2
D 7 38 109491 607.38 689 675 179.2

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