ASTROSAT CZTI

Data Quality Report

Orbit 25506

Creation date: 2024-06-27T19:18:26.565673
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_147T01_9000003722_25506cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25506cztM0_level2_quad_clean.evt
Size (bytes)141,217,92017,187,840
Size134.7 MB 16.4 MB
Events in quadrant A1,030,036100,665
Events in quadrant B1,028,651103,261
Events in quadrant C1,011,72594,911
Events in quadrant D1,086,77394,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040530
B040600
C040110
D042530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17261076.199305%
B17251176.782609%
C17251247.188406%
D1725824.753623%

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 2921 1728 0 0 0.00% 0.00%
B 2920 1727 0 0 0.00% 0.00%
C 2920 1727 0 0 0.00% 0.00%
D 2920 1727 4 4 0.14% 0.23%

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 2513 40.54 266 261 55.5
A 3 137 2426 38.98 266 261 55.5
A 0 226 2306 36.82 266 261 55.5
B 12 111 6461 117.01 261 254 53.0
B 11 111 6028 108.85 261 254 53.0
B 14 111 5575 100.31 261 254 53.0
C 14 238 38719 642.37 247 247 59.9
C 0 10 8105 131.21 247 247 59.9
C 3 233 2800 42.63 247 247 59.9
D 1 52 90397 1398.29 255 247 64.5
D 8 195 33816 520.68 255 247 64.5
D 2 234 5521 81.8 255 247 64.5

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