ASTROSAT CZTI

Data Quality Report

Orbit 26657

Creation date: 2024-06-27T19:31:28.030249
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_26657cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26657cztM0_level2_quad_clean.evt
Size (bytes)498,294,72088,289,280
Size475.2 MB 84.2 MB
Events in quadrant A2,971,275583,953
Events in quadrant B3,746,707576,098
Events in quadrant C3,110,373564,733
Events in quadrant D4,842,477516,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127420
B0149590
C0130220
D0185350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163290.470550%
B61592504.059101%
C6165681.103001%
D61635569.021580%

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 7450 6204 6 6 0.08% 0.10%
B 7451 6206 184 184 2.47% 2.96%
C 7451 6205 8 8 0.11% 0.13%
D 7451 6206 520 520 6.98% 8.38%

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 12 96 45603 294.07 751 736 152.6
A 0 13 21354 135.13 751 736 152.6
A 13 254 9540 57.7 751 736 152.6
B 10 245 820954 5762.62 743 727 142.3
B 12 111 16942 113.92 743 727 142.3
B 3 112 16641 111.81 743 727 142.3
C 14 238 116496 681.61 720 725 169.8
C 15 208 111776 653.82 720 725 169.8
C 3 233 39708 229.52 720 725 169.8
D 7 80 1837703 10598.48 703 684 173.3
D 12 233 156295 897.78 703 684 173.3
D 2 250 54988 313.3 703 684 173.3

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