ASTROSAT CZTI

Data Quality Report

Orbit 20190815_A05_072T04_9000003094_level2

Creation date: 2025-12-03T02:20:21.029678
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_072T04_9000003094cztM0_level2.fits modeM0/AS1A05_072T04_9000003094cztM0_level2_quad_clean.evt
Size (bytes)941,797,440855,313,920
Size898.2 MB 815.7 MB
Events in quadrant A5,886,0945,171,039
Events in quadrant B5,611,6785,106,683
Events in quadrant C5,674,5004,814,347
Events in quadrant D4,862,8344,324,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019320
B019320
C019320
D019320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01949120
B02081050
C01986530
D02331000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A946269841.039883%
B9462516321.724703%
C9462315991.689864%
D9462543204.565390%

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 112305 94629 0 0 0.00% 0.00%
B 112305 94625 0 0 0.00% 0.00%
C 112305 94627 0 0 0.00% 0.00%
D 112305 94612 0 0 0.00% 0.00%

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 29 5638 11.17 1532 1442 375.8
A 7 110 4641 8.51 1532 1442 375.8
A 9 19 4460 8.03 1532 1442 375.8
B 2 9 4381 10.25 1486 1420 288.9
B 2 8 3686 7.84 1486 1420 288.9
B 5 128 3681 7.82 1486 1420 288.9
C 12 241 3868 6.46 1498 1402 381.8
C 12 250 3847 6.4 1498 1402 381.8
C 12 249 3825 6.35 1498 1402 381.8
D 3 14 3537 6.1 1391 1268 371.7
D 6 231 3480 5.95 1391 1268 371.7
D 10 189 3463 5.9 1391 1268 371.7

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