ASTROSAT CZTI

Data Quality Report

Orbit 09928

Creation date: 2024-06-27T15:52:30.207981
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/AS1A02_029T01_9000001416_09928cztM0_level2.evt modeM0/AS1A02_029T01_9000001416_09928cztM0_level2_quad_clean.evt
Size (bytes)392,261,76066,018,240
Size374.1 MB 63.0 MB
Events in quadrant A2,647,429440,833
Events in quadrant B2,575,770440,638
Events in quadrant C2,373,243440,485
Events in quadrant D3,947,073331,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0141
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011830
B011816
C011818
D011820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129941959
B0129662205
C0122011819
D0188093828

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5008591.178115%
B4942531.072440%
C5022280.557547%
D47494689.854706%

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 7225 5618 4 4 0.06% 0.07%
B 7224 5549 2 2 0.03% 0.04%
C 7225 5614 2 2 0.03% 0.04%
D 7225 5386 425 425 5.88% 7.89%

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 15 239 183644 1448.03 620 609 126.4
A 8 15 72793 571.06 620 609 126.4
A 0 226 5885 41.74 620 609 126.4
B 0 219 58969 488.1 621 607 119.6
B 4 81 37986 312.61 621 607 119.6
B 4 239 22505 183.14 621 607 119.6
C 14 128 6654 42.87 604 608 141.0
C 12 4 5229 32.77 604 608 141.0
C 13 61 4711 29.1 604 608 141.0
D 2 16 1018857 7476.59 520 507 136.2
D 8 195 354323 2597.67 520 507 136.2
D 12 17 201418 1475.06 520 507 136.2

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