ASTROSAT CZTI

Data Quality Report

Orbit 40618

Creation date: 2024-06-27T22:18:18.009740
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_011T59_9000005552_40618cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40618cztM0_level2_quad_clean.evt
Size (bytes)316,025,28091,869,120
Size301.4 MB 87.6 MB
Events in quadrant A2,860,806624,317
Events in quadrant B2,711,455648,137
Events in quadrant C2,653,716621,484
Events in quadrant D3,045,775505,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118303
B0117472
C0113982
D0128842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5463110.201355%
B5463320.585759%
C5463180.329489%
D546366412.154494%

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 7375 5464 4 4 0.05% 0.07%
B 7375 5464 18 18 0.24% 0.33%
C 7375 5464 14 14 0.19% 0.26%
D 7375 5464 139 139 1.88% 2.54%

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 500816 4132.84 592 581 121.0
A 12 189 45629 372.18 592 581 121.0
A 2 79 13799 109.2 592 581 121.0
B 0 229 160398 1425.73 591 577 112.1
B 3 112 81939 725.82 591 577 112.1
B 5 255 79447 703.59 591 577 112.1
C 15 214 239768 1807.76 577 581 132.3
C 14 254 73869 553.91 577 581 132.3
C 9 187 34795 258.59 577 581 132.3
D 9 19 222465 1701.41 531 515 130.5
D 12 191 203018 1552.34 531 515 130.5
D 12 128 196782 1504.53 531 515 130.5

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