ASTROSAT CZTI

Data Quality Report

Orbit 01191

Creation date: 2024-06-27T14:08:54.198022
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/AS1G04_007T02_9000000220_01191cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01191cztM0_level2_quad_clean.evt
Size (bytes)1,314,777,600103,662,720
Size1.2 GB 98.9 MB
Events in quadrant A8,764,307710,564
Events in quadrant B9,755,768678,394
Events in quadrant C8,753,286675,637
Events in quadrant D12,066,909570,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311571
B0341690
C0310940
D0412430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A723170.096805%
B72314025.559397%
C723150.069147%
D7231148820.578067%

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 7231 7231 296 296 4.09% 4.09%
B 7231 7231 649 649 8.98% 8.98%
C 7231 7231 236 236 3.26% 3.26%
D 7231 7231 2048 2048 28.32% 28.32%

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 4 32 82480 148.44 2255 2266 540.4
A 8 14 11792 17.63 2255 2266 540.4
A 12 243 11085 16.32 2255 2266 540.4
B 5 191 909172 1714.02 2241 2254 529.1
B 6 53 126437 234.7 2241 2254 529.1
B 12 52 36385 64.5 2241 2254 529.1
C 15 241 421369 709.01 2109 2182 591.2
C 3 79 54555 88.58 2109 2182 591.2
C 3 111 41460 66.43 2109 2182 591.2
D 1 239 3169264 5624.25 1805 1869 563.2
D 10 84 1839840 3263.63 1805 1869 563.2
D 2 16 87988 152.92 1805 1869 563.2

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