ASTROSAT CZTI

Data Quality Report

Orbit 17462

Creation date: 2024-06-27T17:36:51.211920
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/AS1T03_067T01_9000002582_17462cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17462cztM0_level2_quad_clean.evt
Size (bytes)508,898,880106,015,680
Size485.3 MB 101.1 MB
Events in quadrant A3,334,782691,647
Events in quadrant B3,989,896691,326
Events in quadrant C3,360,585665,452
Events in quadrant D4,230,571653,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148941
B0167871
C0148631
D0176471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313230.314508%
B73131341.832353%
C7313310.423903%
D73141161.585999%

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 7723 7314 2 2 0.03% 0.03%
B 7723 7314 48 48 0.62% 0.66%
C 7723 7314 0 0 0.00% 0.00%
D 7724 7315 88 88 1.14% 1.20%

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 44448 250.94 854 834 173.8
A 0 226 7576 38.79 854 834 173.8
A 12 194 6373 31.87 854 834 173.8
B 7 220 328460 2039.31 851 829 160.7
B 15 35 114434 707.12 851 829 160.7
B 4 216 38133 232.2 851 829 160.7
C 14 238 125115 653.6 812 816 190.2
C 3 233 45472 234.81 812 816 190.2
C 8 128 8259 39.14 812 816 190.2
D 13 189 239044 1197.74 821 799 198.9
D 13 232 222685 1115.5 821 799 198.9
D 6 234 111334 555.7 821 799 198.9

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