ASTROSAT CZTI

Data Quality Report

Orbit 14772

Creation date: 2024-06-27T16:59:29.813427
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/AS1A04_022T06_9000002182_14772cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14772cztM0_level2_quad_clean.evt
Size (bytes)1,335,098,880238,993,920
Size1.2 GB 227.9 MB
Events in quadrant A9,458,0781,500,459
Events in quadrant B9,484,2441,510,813
Events in quadrant C10,985,5871,465,225
Events in quadrant D9,226,2111,457,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409125
B0410154
C0453284
D0411974

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18931860.454281%
B189312071.093445%
C189316153.248640%
D189311050.554646%

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 21312 18936 4 4 0.02% 0.02%
B 21312 18936 39 39 0.18% 0.21%
C 21312 18936 390 390 1.83% 2.06%
D 21312 18936 61 61 0.29% 0.32%

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 12 189 647880 1427.02 2222 2174 452.5
A 0 23 140709 306.16 2222 2174 452.5
A 14 237 70919 151.93 2222 2174 452.5
B 10 246 128017 301.6 2220 2165 417.3
B 0 219 108147 253.98 2220 2165 417.3
B 0 229 97672 228.88 2220 2165 417.3
C 4 254 1601197 3282.84 2115 2123 487.1
C 3 233 942012 1929.56 2115 2123 487.1
C 0 207 131173 264.94 2115 2123 487.1
D 8 195 615872 1124.18 2139 2079 546.0
D 15 0 198319 359.42 2139 2079 546.0
D 2 234 74390 132.44 2139 2079 546.0

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