ASTROSAT CZTI

Data Quality Report

Orbit 12846

Creation date: 2024-06-27T16:33:04.037321
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/AS1G08_071T01_9000001888_12846cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12846cztM0_level2_quad_clean.evt
Size (bytes)972,037,440177,960,960
Size927.0 MB 169.7 MB
Events in quadrant A6,093,7481,126,265
Events in quadrant B7,695,4381,130,493
Events in quadrant C6,006,4181,136,325
Events in quadrant D8,738,0361,073,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274944
B0318733
C0275103
D0358883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13363500.374167%
B133634493.360024%
C13363530.396618%
D133637175.365562%

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 14939 13367 0 0 0.00% 0.00%
B 14939 13367 239 239 1.60% 1.79%
C 14939 13367 17 17 0.11% 0.13%
D 14939 13367 639 639 4.28% 4.78%

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 100803 314.0 1555 1516 316.2
A 14 250 15930 45.58 1555 1516 316.2
A 0 226 13670 38.44 1555 1516 316.2
B 4 239 889499 2996.81 1546 1509 296.3
B 0 85 427856 1438.85 1546 1509 296.3
B 0 219 155528 519.79 1546 1509 296.3
C 14 234 63581 175.32 1524 1530 353.9
C 13 61 11135 27.14 1524 1530 353.9
C 3 202 3905 6.71 1524 1530 353.9
D 1 52 2868571 8063.17 1477 1430 355.6
D 13 172 100102 277.49 1477 1430 355.6
D 8 195 75129 207.26 1477 1430 355.6

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