ASTROSAT CZTI

Data Quality Report

Orbit 31187

Creation date: 2024-06-27T20:24:28.319376
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_058T02_9000004510_31187cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31187cztM0_level2_quad_clean.evt
Size (bytes)1,002,712,320133,727,040
Size956.3 MB 127.5 MB
Events in quadrant A5,417,525841,104
Events in quadrant B8,924,816825,564
Events in quadrant C5,658,788808,309
Events in quadrant D9,597,525786,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235812
B0353802
C0242137
D0370862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11397760.666842%
B113983673.219863%
C113973032.658594%
D113974053.553567%

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 12302 11399 0 0 0.00% 0.00%
B 12303 11400 82 82 0.67% 0.72%
C 12302 11399 29 29 0.24% 0.25%
D 12302 11399 126 126 1.02% 1.11%

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 96 23237 77.89 1397 1366 280.8
A 13 254 20180 67.0 1397 1366 280.8
A 3 137 14892 48.17 1397 1366 280.8
B 6 159 3044212 11442.78 1367 1331 265.9
B 4 80 280446 1049.61 1367 1331 265.9
B 0 230 90086 333.76 1367 1331 265.9
C 14 238 222122 699.34 1330 1336 315.7
C 10 22 125563 393.49 1330 1336 315.7
C 0 10 81949 255.34 1330 1336 315.7
D 8 195 4391040 12901.97 1328 1300 340.2
D 2 250 71053 205.01 1328 1300 340.2
D 12 218 52233 149.7 1328 1300 340.2

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