ASTROSAT CZTI

Data Quality Report

Orbit 29551

Creation date: 2024-06-27T20:05:24.956986
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_104T02_9000004258_29551cztM0_level2.evt modeM0/AS1A10_104T02_9000004258_29551cztM0_level2_quad_clean.evt
Size (bytes)204,050,88033,528,960
Size194.6 MB 32.0 MB
Events in quadrant A934,507231,873
Events in quadrant B1,042,869240,319
Events in quadrant C1,042,988214,364
Events in quadrant D3,034,545195,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038261
B041821
C042061
D0102591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1802452.497225%
B1802683.773585%
C180229816.537181%
D180251928.801332%

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 2252 1803 1 1 0.04% 0.06%
B 2252 1803 12 12 0.53% 0.67%
C 2252 1803 0 0 0.00% 0.00%
D 2252 1803 323 323 14.34% 17.91%

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 0 13 16919 330.61 237 231 50.5
A 13 254 3206 58.94 237 231 50.5
A 3 137 2590 46.73 237 231 50.5
B 5 255 59176 1241.67 232 225 47.5
B 0 156 37353 782.02 232 225 47.5
B 0 230 12448 257.45 232 225 47.5
C 14 238 95092 1835.5 212 212 51.7
C 14 254 77495 1495.08 212 212 51.7
C 7 247 22082 423.09 212 212 51.7
D 8 195 1993699 37305.92 216 209 53.4
D 7 80 104614 1953.82 216 209 53.4
D 13 153 89321 1667.63 216 209 53.4

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