ASTROSAT CZTI

Data Quality Report

Orbit 17494

Creation date: 2024-06-27T17:37:08.554288
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_194T05_9000002592_17494cztM0_level2.evt modeM0/AS1A05_194T05_9000002592_17494cztM0_level2_quad_clean.evt
Size (bytes)1,398,352,320236,396,160
Size1.3 GB 225.4 MB
Events in quadrant A8,685,7671,488,345
Events in quadrant B8,923,1851,517,150
Events in quadrant C8,850,4821,461,978
Events in quadrant D14,624,8111,401,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385294
B0388894
C0384074
D0566264

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18741870.464223%
B187421250.666951%
C187421710.912389%
D1874210815.767794%

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 21446 18745 4 4 0.02% 0.02%
B 21447 18746 5 5 0.02% 0.03%
C 21447 18746 0 0 0.00% 0.00%
D 21447 18746 848 848 3.95% 4.52%

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 15 174 91514 198.7 2231 2181 449.6
A 0 226 19677 38.92 2231 2181 449.6
A 3 137 16663 32.21 2231 2181 449.6
B 0 230 87153 199.83 2228 2171 425.3
B 12 111 51284 115.48 2228 2171 425.3
B 11 111 44275 99.0 2228 2171 425.3
C 14 238 328770 653.05 2139 2150 500.1
C 5 218 129150 253.93 2139 2150 500.1
C 3 233 39830 75.34 2139 2150 500.1
D 1 52 3149052 6133.66 2119 2062 513.1
D 11 176 1413358 2750.69 2119 2062 513.1
D 7 238 1121354 2181.56 2119 2062 513.1

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