ASTROSAT CZTI

Data Quality Report

Orbit 40170

Creation date: 2024-06-27T22:13:24.255761
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_068T01_9000005526_40170cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40170cztM0_level2_quad_clean.evt
Size (bytes)371,779,20091,287,360
Size354.6 MB 87.1 MB
Events in quadrant A3,619,267582,794
Events in quadrant B2,644,431650,719
Events in quadrant C3,898,214627,254
Events in quadrant D3,205,262548,287

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138033
B0110762
C0149632
D0130052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50744298.454868%
B5074781.537249%
C50741272.502956%
D50743166.227828%

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 9018 5076 366 366 4.06% 7.21%
B 9018 5075 52 52 0.58% 1.02%
C 9018 5075 131 131 1.45% 2.58%
D 9018 5075 317 317 3.52% 6.25%

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 13 248 829899 7124.64 571 561 116.4
A 10 83 397688 3411.62 571 561 116.4
A 2 79 112211 959.16 571 561 116.4
B 5 172 229170 2012.23 596 581 113.6
B 0 245 30301 261.62 596 581 113.6
B 4 171 20037 171.27 596 581 113.6
C 9 187 1322026 9635.84 591 598 137.1
C 15 214 213820 1554.81 591 598 137.1
C 0 10 46963 338.09 591 598 137.1
D 13 249 797277 5643.19 576 561 141.2
D 12 233 61516 431.75 576 561 141.2
D 1 47 54076 379.05 576 561 141.2

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