ASTROSAT CZTI

Data Quality Report

Orbit 07109

Creation date: 2024-06-27T15:15:42.020214
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/AS1A02_090T01_9000000970_07109cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07109cztM0_level2_quad_clean.evt
Size (bytes)798,004,800157,587,840
Size761.0 MB 150.3 MB
Events in quadrant A5,612,3141,004,965
Events in quadrant B5,943,4211,017,582
Events in quadrant C5,538,7541,000,007
Events in quadrant D6,285,863946,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240543
B0246712
C0241142
D0261312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116112412.075618%
B116112482.135906%
C116111681.446904%
D116112131.834467%

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 13516 11611 6 6 0.04% 0.05%
B 13516 11611 4 4 0.03% 0.03%
C 13516 11611 1 1 0.01% 0.01%
D 13516 11611 48 48 0.36% 0.41%

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 14 111 23974 76.42 1444 1412 295.2
A 13 248 18454 57.72 1444 1412 295.2
A 8 15 17571 54.73 1444 1412 295.2
B 0 214 119236 426.09 1457 1427 276.5
B 0 219 107116 382.26 1457 1427 276.5
B 12 111 27705 95.04 1457 1427 276.5
C 4 254 30761 90.6 1400 1414 323.9
C 7 247 23383 67.82 1400 1414 323.9
C 9 68 22140 63.98 1400 1414 323.9
D 8 195 315461 923.35 1396 1358 340.2
D 2 216 272458 796.93 1396 1358 340.2
D 12 212 127255 370.09 1396 1358 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