ASTROSAT CZTI

Data Quality Report

Orbit 40806

Creation date: 2024-06-27T22:20:44.686211
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_099T03_9000005570_40806cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40806cztM0_level2_quad_clean.evt
Size (bytes)295,859,52088,162,560
Size282.2 MB 84.1 MB
Events in quadrant A2,773,362596,032
Events in quadrant B2,364,436618,302
Events in quadrant C2,635,530568,376
Events in quadrant D2,776,738525,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113723
B0104602
C0110612
D0120072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149180.349582%
B514990.174791%
C5149641.242960%
D5149641.242960%

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 7032 5150 6 6 0.09% 0.12%
B 7032 5150 5 5 0.07% 0.10%
C 7032 5150 69 69 0.98% 1.34%
D 7032 5150 72 72 1.02% 1.40%

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 503645 4251.37 576 564 118.3
A 2 79 24790 204.73 576 564 118.3
A 15 191 12939 104.58 576 564 118.3
B 5 255 45666 406.87 577 563 110.9
B 0 190 14262 123.58 577 563 110.9
B 12 111 13934 120.62 577 563 110.9
C 0 10 226661 1745.59 552 556 129.5
C 15 214 218471 1682.36 552 556 129.5
C 14 254 26419 199.67 552 556 129.5
D 2 153 249488 1841.61 549 533 135.2
D 2 249 116851 860.45 549 533 135.2
D 12 238 97619 718.18 549 533 135.2

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