ASTROSAT CZTI

Data Quality Report

Orbit 26656

Creation date: 2024-06-27T19:31:27.307220
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/AS1A09_145T01_9000003848_26656cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26656cztM0_level2_quad_clean.evt
Size (bytes)290,404,80060,621,120
Size277.0 MB 57.8 MB
Events in quadrant A2,050,049367,430
Events in quadrant B2,151,844364,752
Events in quadrant C2,079,575351,666
Events in quadrant D2,205,474434,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088080
B091220
C088470
D093560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137
B01310
C01411
D01714

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4274240.561535%
B4236451.062323%
C4251451.058574%
D4144310.748069%

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 7520 4889 0 0 0.00% 0.00%
B 7557 4834 2 2 0.03% 0.04%
C 7740 4840 2 2 0.03% 0.04%
D 7504 4737 13 13 0.17% 0.27%

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 0 13 37026 340.77 520 508 107.2
A 13 254 7074 61.27 520 508 107.2
A 12 189 5782 49.22 520 508 107.2
B 10 245 73372 732.77 512 501 99.4
B 5 172 30562 302.29 512 501 99.4
B 15 32 18025 176.22 512 501 99.4
C 14 238 78157 661.42 493 496 117.4
C 15 208 48582 409.53 493 496 117.4
C 3 233 16208 133.81 493 496 117.4
D 7 80 116346 961.45 486 472 120.5
D 2 250 81348 671.06 486 472 120.5
D 1 52 67725 558.02 486 472 120.5

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