ASTROSAT CZTI

Data Quality Report

Orbit 17035

Creation date: 2024-06-27T17:31:08.040445
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/AS1T03_038T01_9000002530_17035cztM0_level2.evt modeM0/AS1T03_038T01_9000002530_17035cztM0_level2_quad_clean.evt
Size (bytes)782,193,600185,912,640
Size746.0 MB 177.3 MB
Events in quadrant A5,352,6471,220,093
Events in quadrant B5,622,6111,255,115
Events in quadrant C5,934,5721,198,785
Events in quadrant D6,009,2671,170,907

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235043
B0241083
C0251413
D0260124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11359740.651466%
B11360890.783451%
C113601331.170775%
D113592372.086451%

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 13900 11362 0 0 0.00% 0.00%
B 13901 11363 3 3 0.02% 0.03%
C 13901 11363 1 1 0.01% 0.01%
D 13900 11362 132 132 0.95% 1.16%

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 0 226 12078 38.77 1388 1358 276.5
A 12 189 11453 36.51 1388 1358 276.5
A 12 194 10197 31.97 1388 1358 276.5
B 0 229 58568 221.29 1394 1362 258.5
B 10 247 47154 177.14 1394 1362 258.5
B 0 189 36202 134.77 1394 1362 258.5
C 3 233 471971 1535.17 1338 1349 306.6
C 14 238 210927 683.64 1338 1349 306.6
C 7 247 17951 54.16 1338 1349 306.6
D 1 52 595602 1857.99 1337 1300 319.9
D 10 70 212452 660.13 1337 1300 319.9
D 5 222 98787 304.78 1337 1300 319.9

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