ASTROSAT CZTI

Data Quality Report

Orbit 40756

Creation date: 2024-06-27T22:20:03.905758
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/AS1A12_068T02_9000005564_40756cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40756cztM0_level2_quad_clean.evt
Size (bytes)461,865,60098,968,320
Size440.5 MB 94.4 MB
Events in quadrant A3,286,450688,016
Events in quadrant B2,933,401703,247
Events in quadrant C6,537,141619,468
Events in quadrant D3,846,952543,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134753
B0129992
C0237032
D0158222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335170.268350%
B6335190.299921%
C633571911.349645%
D633579312.517758%

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 8962 6337 3 3 0.03% 0.05%
B 8962 6337 4 4 0.04% 0.06%
C 8962 6337 712 712 7.94% 11.24%
D 8962 6337 296 296 3.30% 4.67%

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 10 83 532293 3695.67 703 689 143.8
A 6 10 27023 183.07 703 689 143.8
A 3 137 8124 51.69 703 689 143.8
B 0 229 77816 558.82 700 679 138.0
B 4 171 38967 277.38 700 679 138.0
B 4 81 38946 277.23 700 679 138.0
C 9 187 3615496 23390.77 663 667 154.5
C 15 214 265983 1716.8 663 667 154.5
C 14 254 32117 203.51 663 667 154.5
D 2 249 1064271 6641.15 639 620 160.2
D 12 191 165233 1027.8 639 620 160.2
D 2 250 71085 439.96 639 620 160.2

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