ASTROSAT CZTI

Data Quality Report

Orbit 50306

Creation date: 2025-01-16T14:53:25.462873
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/AS1C09_003T01_9000006442_50306cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50306cztM0_level2_quad_clean.evt
Size (bytes)1,137,378,24061,139,520
Size1.1 GB 58.3 MB
Events in quadrant A7,089,702537,328
Events in quadrant B7,660,022512,938
Events in quadrant C14,362,92899,619
Events in quadrant D12,490,615249,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255571
B0271741
C0471311
D0416261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473113317.503476%
B6473182128.132242%
C6473557286.080643%
D6473381858.983470%

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 7448 6474 721 721 9.68% 11.14%
B 7448 6474 1402 1402 18.82% 21.66%
C 7448 6472 4442 4442 59.64% 68.63%
D 7448 6472 3568 3568 47.91% 55.13%

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 3 63 1142253 7084.95 657 642 161.1
A 0 98 646938 4010.98 657 642 161.1
A 10 253 535223 3317.66 657 642 161.1
B 4 206 2859045 21767.26 613 591 131.3
B 1 238 1056449 8040.41 613 591 131.3
B 5 32 783565 5962.38 613 591 131.3
C 15 197 6547820 83574.45 275 274 78.3
C 4 111 3171246 40475.05 275 274 78.3
C 6 143 1372735 17518.42 275 274 78.3
D 7 61 6701659 57260.49 417 403 117.0
D 2 37 1756739 15007.43 417 403 117.0
D 12 6 1090794 9317.11 417 403 117.0

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