ASTROSAT CZTI

Data Quality Report

Orbit 39181

Creation date: 2024-06-27T22:01:27.685115
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_054T02_9000005444_39181cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39181cztM0_level2_quad_clean.evt
Size (bytes)502,387,20091,860,480
Size479.1 MB 87.6 MB
Events in quadrant A3,015,039669,461
Events in quadrant B2,608,433680,594
Events in quadrant C2,879,771642,983
Events in quadrant D9,630,001372,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126443
B0120712
C0124022
D0327522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595880.134273%
B5958150.251762%
C5958130.218194%
D5958246541.372944%

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 9153 5960 6 6 0.07% 0.10%
B 9153 5960 9 9 0.10% 0.15%
C 9153 5960 16 16 0.17% 0.27%
D 9153 5960 2056 2056 22.46% 34.50%

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 462163 3476.71 651 637 132.7
A 2 79 28342 208.7 651 637 132.7
A 13 254 8021 55.62 651 637 132.7
B 5 184 32160 254.25 645 629 124.0
B 0 156 18499 144.09 645 629 124.0
B 12 111 15797 122.3 645 629 124.0
C 15 214 250376 1701.5 629 631 146.8
C 9 187 157296 1067.35 629 631 146.8
C 15 208 15013 97.98 629 631 146.8
D 12 235 6953515 52646.95 539 523 132.1
D 12 233 166029 1253.19 539 523 132.1
D 2 249 142404 1074.3 539 523 132.1

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