ASTROSAT CZTI

Data Quality Report

Orbit 38445

Creation date: 2024-06-27T21:52:50.477798
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_38445cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38445cztM0_level2_quad_clean.evt
Size (bytes)318,680,64091,097,280
Size303.9 MB 86.9 MB
Events in quadrant A2,752,699630,788
Events in quadrant B2,898,695635,691
Events in quadrant C2,513,194596,324
Events in quadrant D3,235,295539,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112162
B0117991
C0105311
D0128551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5090190.373281%
B5090751.473477%
C509070.137525%
D50902104.125737%

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 6943 5091 5 5 0.07% 0.10%
B 6943 5091 50 50 0.72% 0.98%
C 6943 5091 4 4 0.06% 0.08%
D 6943 5091 186 186 2.68% 3.65%

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 341684 2860.18 592 580 119.3
A 9 143 44340 366.93 592 580 119.3
A 13 248 43643 361.09 592 580 119.3
B 0 183 245171 2242.33 580 567 109.1
B 8 3 135541 1237.33 580 567 109.1
B 4 232 95962 874.5 580 567 109.1
C 15 214 216158 1650.34 564 568 130.6
C 14 254 72354 549.52 564 568 130.6
C 0 10 16227 119.87 564 568 130.6
D 12 227 466780 3454.9 561 545 134.9
D 7 38 189745 1402.01 561 545 134.9
D 13 249 89731 660.89 561 545 134.9

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