ASTROSAT CZTI

Data Quality Report

Orbit 48215

Creation date: 2024-08-27T22:25:40.190271
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/AS1C09_004T05_9000006416_48215cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48215cztM0_level2_quad_clean.evt
Size (bytes)559,684,800103,772,160
Size533.8 MB 99.0 MB
Events in quadrant A7,770,109683,688
Events in quadrant B5,607,373709,636
Events in quadrant C2,811,064686,944
Events in quadrant D4,058,228636,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273094
B0210671
C0127371
D0162041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60905919.704433%
B60911943.185027%
C6091530.870136%
D60911642.692497%

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 7245 6090 340 340 4.69% 5.58%
B 7246 6092 47 47 0.65% 0.77%
C 7246 6092 18 18 0.25% 0.30%
D 7246 6092 107 107 1.48% 1.76%

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 10 83 4211789 30662.67 656 644 137.3
A 14 235 566380 4119.3 656 644 137.3
A 15 174 345876 2513.74 656 644 137.3
B 10 7 1989695 15271.12 676 656 130.2
B 0 200 420109 3220.41 676 656 130.2
B 0 198 118653 905.94 676 656 130.2
C 12 2 100805 639.03 676 678 156.7
C 6 247 31020 193.65 676 678 156.7
C 14 254 12412 74.89 676 678 156.7
D 2 165 926082 5509.87 676 656 168.0
D 12 7 191991 1139.18 676 656 168.0
D 2 249 129657 768.06 676 656 168.0

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