ASTROSAT CZTI

Data Quality Report

Orbit 27637

Creation date: 2024-06-27T19:42:27.403118
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/AS1T03_257T01_9000003976_27637cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27637cztM0_level2_quad_clean.evt
Size (bytes)830,669,76087,724,800
Size792.2 MB 83.7 MB
Events in quadrant A4,080,097553,376
Events in quadrant B4,385,910561,030
Events in quadrant C4,318,290535,287
Events in quadrant D11,808,269426,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175390
B0181850
C0181140
D0408840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83423384.051786%
B83434345.201966%
C83424405.274515%
D8342267832.102613%

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 8777 8343 0 0 0.00% 0.00%
B 8777 8342 11 11 0.13% 0.13%
C 8776 8342 34 34 0.39% 0.41%
D 8777 8343 2414 2414 27.50% 28.93%

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 13489 58.34 1049 1023 213.7
A 15 174 12539 53.89 1049 1023 213.7
A 3 137 10532 44.5 1049 1023 213.7
B 10 245 115484 559.88 1045 1015 204.5
B 0 230 37176 176.87 1045 1015 204.5
B 0 190 36046 171.34 1045 1015 204.5
C 14 238 160546 665.34 1009 1013 239.8
C 2 16 159900 662.64 1009 1013 239.8
C 15 208 55746 228.27 1009 1013 239.8
D 1 52 6138773 28362.17 901 873 216.4
D 7 80 1829814 8451.22 901 873 216.4
D 2 250 295668 1362.2 901 873 216.4

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