ASTROSAT CZTI

Data Quality Report

Orbit 19766

Creation date: 2024-06-27T18:06:44.814261
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/AS1A05_088T05_9000002952_19766cztM0_level2.evt modeM0/AS1A05_088T05_9000002952_19766cztM0_level2_quad_clean.evt
Size (bytes)1,597,489,920235,604,160
Size1.5 GB 224.7 MB
Events in quadrant A8,827,3551,529,435
Events in quadrant B8,969,7601,547,754
Events in quadrant C17,776,7471,319,626
Events in quadrant D11,530,1901,435,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388384
B0389244
C06517311
D0473684

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189063561.883000%
B189073932.078595%
C18906317316.783032%
D189068454.469481%

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 20956 18907 0 0 0.00% 0.00%
B 20957 18910 6 6 0.03% 0.03%
C 20955 18907 2160 2160 10.31% 11.42%
D 20956 18909 506 506 2.41% 2.68%

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 6 16 61541 129.33 2273 2219 458.7
A 0 226 19882 38.51 2273 2219 458.7
A 3 137 19236 37.1 2273 2219 458.7
B 12 111 54318 119.06 2265 2203 437.7
B 11 111 48374 105.48 2265 2203 437.7
B 14 111 42169 91.3 2265 2203 437.7
C 3 233 9308899 19269.78 2059 2067 483.0
C 14 238 315528 649.02 2059 2067 483.0
C 7 220 86335 174.48 2059 2067 483.0
D 7 238 1984991 3737.13 2186 2119 530.6
D 1 52 1115767 2098.9 2186 2119 530.6
D 12 233 77678 142.41 2186 2119 530.6

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