ASTROSAT CZTI

Data Quality Report

Orbit 50779

Creation date: 2025-02-16T17:28:11.358400
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/AS1C07_001T01_9000006450_50779cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50779cztM0_level2_quad_clean.evt
Size (bytes)654,500,16088,260,480
Size624.2 MB 84.2 MB
Events in quadrant A5,469,500577,818
Events in quadrant B3,460,845658,879
Events in quadrant C6,313,949567,321
Events in quadrant D8,477,254412,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205731
B0149171
C0232711
D0296931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65316009.186955%
B65311412.158934%
C65313244.960955%
D6531195929.995407%

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 7416 6532 415 415 5.60% 6.35%
B 7416 6532 26 26 0.35% 0.40%
C 7416 6532 289 289 3.90% 4.42%
D 7416 6531 1300 1300 17.53% 19.91%

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 4 249 1414028 8282.95 677 659 170.6
A 5 17 426258 2494.19 677 659 170.6
A 3 130 154244 900.07 677 659 170.6
B 3 249 193113 1316.25 682 658 146.2
B 4 170 89962 610.77 682 658 146.2
B 5 185 82705 561.14 682 658 146.2
C 5 10 2450931 13594.61 653 647 180.2
C 13 3 407000 2254.52 653 647 180.2
C 4 5 222386 1230.25 653 647 180.2
D 8 176 1505844 9118.42 583 563 165.1
D 8 242 1345944 8149.8 583 563 165.1
D 2 216 696992 4218.7 583 563 165.1

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