ASTROSAT CZTI

Data Quality Report

Orbit 42396

Creation date: 2024-06-27T22:39:47.909712
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/AS1C06_010T01_9000005800_42396cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42396cztM0_level2_quad_clean.evt
Size (bytes)594,835,200167,849,280
Size567.3 MB 160.1 MB
Events in quadrant A5,458,6471,114,938
Events in quadrant B4,904,0151,121,620
Events in quadrant C5,148,2091,104,967
Events in quadrant D5,701,9241,020,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229503
B0223423
C0221443
D0245413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10382210.202273%
B10383860.828277%
C10383570.548974%
D103831861.791390%

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 14410 10385 10 10 0.07% 0.10%
B 14411 10386 50 50 0.35% 0.48%
C 14411 10386 39 39 0.27% 0.38%
D 14411 10386 143 143 0.99% 1.38%

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 1010107 4416.03 1118 1094 228.5
A 13 248 49928 213.73 1118 1094 228.5
A 13 6 28624 120.49 1118 1094 228.5
B 5 172 301893 1419.24 1104 1073 212.0
B 0 245 100866 470.81 1104 1073 212.0
B 4 141 62331 289.01 1104 1073 212.0
C 15 214 428393 1687.45 1090 1096 253.2
C 4 254 287001 1129.07 1090 1096 253.2
C 14 254 137368 538.15 1090 1096 253.2
D 2 249 285860 1067.95 1094 1062 266.7
D 1 52 284236 1061.86 1094 1062 266.7
D 12 6 267180 997.91 1094 1062 266.7

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