ASTROSAT CZTI

Data Quality Report

Orbit 39884

Creation date: 2024-06-27T22:09:53.340499
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_032T03_9000005502_39884cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39884cztM0_level2_quad_clean.evt
Size (bytes)411,701,76089,619,840
Size392.6 MB 85.5 MB
Events in quadrant A3,336,806601,242
Events in quadrant B3,681,568609,079
Events in quadrant C3,019,126599,655
Events in quadrant D4,778,815522,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131863
B0145552
C0121512
D0179452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5451691.265823%
B54511292.366538%
C5451661.210787%
D54514398.053568%

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 7333 5452 56 56 0.76% 1.03%
B 7333 5452 65 65 0.89% 1.19%
C 7333 5452 55 55 0.75% 1.01%
D 7333 5452 398 398 5.43% 7.30%

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 551922 4457.03 605 593 123.7
A 14 250 208134 1677.8 605 593 123.7
A 9 143 76350 612.43 605 593 123.7
B 0 221 335588 2899.18 599 583 115.6
B 0 183 295621 2553.3 599 583 115.6
B 0 230 138332 1192.1 599 583 115.6
C 14 254 292619 2103.0 592 597 138.9
C 15 214 234630 1685.4 592 597 138.9
C 1 16 64272 458.56 592 597 138.9
D 12 227 701096 4879.12 577 560 143.6
D 2 250 573132 3987.88 577 560 143.6
D 1 47 338218 2351.74 577 560 143.6

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