ASTROSAT CZTI

Data Quality Report

Orbit 33451

Creation date: 2024-06-27T20:49:00.050318
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/AS1A11_065T07_9000004798_33451cztM0_level2.evt modeM0/AS1A11_065T07_9000004798_33451cztM0_level2_quad_clean.evt
Size (bytes)469,062,72086,114,880
Size447.3 MB 82.1 MB
Events in quadrant A2,564,123572,408
Events in quadrant B3,530,375580,879
Events in quadrant C3,006,505561,159
Events in quadrant D4,741,221518,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108423
B0138902
C0119962
D0178322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535560.112045%
B53552214.126984%
C5355581.083100%
D53551522.838469%

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 7358 5356 0 0 0.00% 0.00%
B 7358 5356 169 169 2.30% 3.16%
C 7358 5356 46 46 0.63% 0.86%
D 7358 5356 150 150 2.04% 2.80%

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 6 9977 71.48 658 647 130.5
A 13 254 8307 58.68 658 647 130.5
A 7 192 7205 50.24 658 647 130.5
B 5 172 632961 5139.01 650 636 123.0
B 5 255 151808 1228.6 650 636 123.0
B 0 219 51712 415.1 650 636 123.0
C 15 214 233079 1598.9 633 640 145.4
C 0 10 106414 727.6 633 640 145.4
C 9 187 94670 646.81 633 640 145.4
D 8 195 1369558 8917.09 624 608 153.5
D 2 250 448580 2918.01 624 608 153.5
D 13 249 172557 1120.04 624 608 153.5

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