ASTROSAT CZTI

Data Quality Report

Orbit 23495

Creation date: 2024-06-27T18:55:12.638827
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_100T02_9000003476_23495cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23495cztM0_level2_quad_clean.evt
Size (bytes)143,254,08024,534,720
Size136.6 MB 23.4 MB
Events in quadrant A948,608152,463
Events in quadrant B1,034,637158,665
Events in quadrant C1,179,050147,306
Events in quadrant D1,045,178146,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415
B0415
C0404
D0393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032
B031
C031
D031

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04209244
B04409210
C04928243
D04509261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1893351.848917%
B1906603.147954%
C18971226.431207%
D1892231.215645%

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 2832 1905 0 0 0.00% 0.00%
B 2834 1916 0 0 0.00% 0.00%
C 2834 1910 18 18 0.64% 0.94%
D 2833 1905 7 7 0.25% 0.37%

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 3112 55.87 245 240 51.4
A 0 226 2156 37.27 245 240 51.4
A 3 137 2103 36.24 245 240 51.4
B 0 189 44531 916.25 244 238 48.3
B 5 172 9870 199.25 244 238 48.3
B 0 229 6240 124.16 244 238 48.3
C 0 207 120538 2143.88 236 236 56.1
C 7 247 50563 896.87 236 236 56.1
C 14 238 36785 651.33 236 236 56.1
D 1 52 71599 1185.99 244 237 60.2
D 13 174 32497 536.14 244 237 60.2
D 2 234 7652 123.23 244 237 60.2

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