ASTROSAT CZTI

Data Quality Report

Orbit 42642

Creation date: 2024-06-27T22:42:33.019511
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_174T01_9000005820_42642cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42642cztM0_level2_quad_clean.evt
Size (bytes)796,032,000206,714,880
Size759.2 MB 197.1 MB
Events in quadrant A7,994,7321,374,040
Events in quadrant B6,596,5621,392,079
Events in quadrant C6,124,0661,360,416
Events in quadrant D7,748,2621,238,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319023
B0286373
C0262713
D0321693

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129392031.568900%
B129402612.017002%
C1293970.054100%
D129393852.975500%

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 16965 12942 196 196 1.16% 1.51%
B 16966 12943 207 207 1.22% 1.60%
C 16965 12942 0 0 0.00% 0.00%
D 16965 12942 361 361 2.13% 2.79%

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 13 248 1373854 4762.97 1396 1366 288.2
A 10 83 1147954 3979.02 1396 1366 288.2
A 2 79 62014 210.47 1396 1366 288.2
B 0 229 817448 3012.16 1385 1345 270.9
B 0 245 242996 891.91 1385 1345 270.9
B 3 112 61063 220.41 1385 1345 270.9
C 15 214 527731 1629.38 1380 1389 323.0
C 3 233 171908 527.87 1380 1389 323.0
C 5 250 21462 62.14 1380 1389 323.0
D 12 6 939644 2792.79 1361 1321 336.0
D 2 249 797003 2368.24 1361 1321 336.0
D 12 233 204806 605.65 1361 1321 336.0

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