ASTROSAT CZTI

Data Quality Report

Orbit 21714

Creation date: 2024-06-27T18:31:20.863626
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/AS1A07_039T01_9000003216_21714cztM0_level2.evt modeM0/AS1A07_039T01_9000003216_21714cztM0_level2_quad_clean.evt
Size (bytes)459,529,920133,223,040
Size438.2 MB 127.1 MB
Events in quadrant A3,101,714892,210
Events in quadrant B3,470,627920,049
Events in quadrant C3,323,327894,538
Events in quadrant D3,568,762864,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135532
B0144443
C0138072
D0150102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6657170.255370%
B6656711.066707%
C6656741.111779%
D6656530.796274%

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 7707 6658 1 1 0.01% 0.02%
B 7706 6657 27 27 0.35% 0.41%
C 7706 6657 0 0 0.00% 0.00%
D 7706 6657 17 17 0.22% 0.26%

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 13 254 11430 66.62 800 784 159.8
A 10 253 8529 48.47 800 784 159.8
A 0 226 6711 37.09 800 784 159.8
B 3 64 147766 989.0 807 786 148.6
B 0 229 57596 382.26 807 786 148.6
B 0 230 55481 368.03 807 786 148.6
C 14 238 125692 679.4 791 797 183.8
C 8 208 91476 493.27 791 797 183.8
C 8 128 11949 60.66 791 797 183.8
D 1 52 201128 1068.58 790 768 187.5
D 12 235 184221 978.41 790 768 187.5
D 14 35 63590 335.05 790 768 187.5

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