ASTROSAT CZTI

Data Quality Report

Orbit 30435

Creation date: 2024-06-27T20:15:12.487060
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/AS1A10_121T02_9000004378_30435cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30435cztM0_level2_quad_clean.evt
Size (bytes)1,618,404,480239,388,480
Size1.5 GB 228.3 MB
Events in quadrant A8,853,7061,531,815
Events in quadrant B14,359,5211,532,677
Events in quadrant C9,445,1131,498,237
Events in quadrant D15,092,7431,396,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385124
B0567674
C0396194
D0578684

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187331931.030267%
B187343782.017722%
C187343741.996370%
D18734244113.029785%

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 20993 18733 0 0 0.00% 0.00%
B 20994 18734 12 12 0.06% 0.06%
C 20994 18734 7 7 0.03% 0.04%
D 20994 18734 1695 1695 8.07% 9.05%

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 4 2 39946 83.0 2263 2210 454.6
A 8 192 39161 81.28 2263 2210 454.6
A 13 254 33003 67.73 2263 2210 454.6
B 6 159 5261293 12209.63 2239 2183 430.7
B 0 229 130617 298.17 2239 2183 430.7
B 0 230 66017 148.2 2239 2183 430.7
C 3 233 408949 797.77 2168 2180 509.9
C 14 238 390609 761.8 2168 2180 509.9
C 10 22 65819 124.81 2168 2180 509.9
D 13 104 6354645 11892.89 2069 2026 534.2
D 8 195 450493 839.58 2069 2026 534.2
D 12 227 175156 324.12 2069 2026 534.2

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