ASTROSAT CZTI

Data Quality Report

Orbit 09637

Creation date: 2024-06-27T15:48:43.309064
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/AS1A03_077T01_9000001372_09637cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09637cztM0_level2_quad_clean.evt
Size (bytes)431,726,40073,157,760
Size411.7 MB 69.8 MB
Events in quadrant A3,052,084445,252
Events in quadrant B3,243,322445,073
Events in quadrant C3,027,458443,795
Events in quadrant D3,314,764432,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132163
B0136772
C0132264
D0139942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433400.621794%
B6433470.730608%
C6432550.855100%
D6433400.621794%

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 7593 6434 0 0 0.00% 0.00%
B 7593 6434 1 1 0.01% 0.02%
C 7593 6433 0 0 0.00% 0.00%
D 7593 6434 5 5 0.07% 0.08%

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 13 253 8441 47.55 791 776 161.2
A 0 226 7297 40.45 791 776 161.2
A 12 194 6260 34.02 791 776 161.2
B 0 219 59178 385.54 797 778 151.5
B 0 214 51731 336.38 797 778 151.5
B 0 229 26782 171.67 797 778 151.5
C 13 61 5642 27.06 774 778 179.7
C 14 67 5301 25.16 774 778 179.7
C 12 4 2952 12.09 774 778 179.7
D 8 195 225121 1208.37 765 749 185.7
D 7 71 52543 278.94 765 749 185.7
D 1 52 41233 218.03 765 749 185.7

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