ASTROSAT CZTI

Data Quality Report

Orbit 39032

Creation date: 2024-06-27T21:59:22.546245
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_042T01_9000005428_39032cztM0_level2.fits modeM0/AS1A12_042T01_9000005428_39032cztM0_level2_quad_clean.evt
Size (bytes)434,269,440109,661,760
Size414.2 MB 104.6 MB
Events in quadrant A5,439,178711,934
Events in quadrant B2,970,263756,777
Events in quadrant C3,527,128722,797
Events in quadrant D3,622,853665,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208943
B0136072
C0151052
D0155932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66343555.351221%
B6634280.422068%
C6634851.281278%
D66341352.034971%

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 9350 6636 260 260 2.78% 3.92%
B 9350 6636 8 8 0.09% 0.12%
C 9350 6636 62 62 0.66% 0.93%
D 9350 6636 108 108 1.16% 1.63%

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 15 222 1807621 12549.09 713 699 144.0
A 10 83 466053 3231.89 713 699 144.0
A 13 248 212037 1467.74 713 699 144.0
B 5 172 50207 352.23 727 706 140.5
B 5 184 41663 291.43 727 706 140.5
B 12 111 17874 122.16 727 706 140.5
C 15 208 373460 2253.49 712 717 165.4
C 15 214 277004 1670.35 712 717 165.4
C 3 233 83993 503.46 712 717 165.4
D 12 227 294401 1732.88 705 686 169.5
D 2 249 226668 1333.27 705 686 169.5
D 12 233 130993 768.8 705 686 169.5

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