ASTROSAT CZTI

Data Quality Report

Orbit 38477

Creation date: 2024-06-27T21:53:17.278105
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/AS1A12_018T01_9000005386_38477cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38477cztM0_level2_quad_clean.evt
Size (bytes)403,902,72087,618,240
Size385.2 MB 83.6 MB
Events in quadrant A2,709,283638,317
Events in quadrant B2,969,116629,260
Events in quadrant C2,442,979601,870
Events in quadrant D6,449,247441,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108723
B0117992
C0100262
D0225452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4890120.245399%
B48901533.128834%
C489070.143149%
D4890124825.521472%

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 7044 4891 5 5 0.07% 0.10%
B 7044 4891 116 116 1.65% 2.37%
C 7044 4891 4 4 0.06% 0.08%
D 7044 4891 1227 1227 17.42% 25.09%

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 390898 3375.35 582 571 115.6
A 13 248 22441 189.12 582 571 115.6
A 13 6 17605 147.3 582 571 115.6
B 5 184 482085 4548.72 567 554 105.9
B 8 3 130653 1228.96 567 554 105.9
B 0 155 32895 305.5 567 554 105.9
C 15 214 203783 1583.68 560 564 128.3
C 0 10 26499 202.11 560 564 128.3
C 14 254 13624 101.78 560 564 128.3
D 2 16 2049625 16760.0 503 490 122.3
D 12 227 1531271 12520.35 503 490 122.3
D 2 250 443014 3619.43 503 490 122.3

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