ASTROSAT CZTI

Data Quality Report

Orbit 06227

Creation date: 2024-06-27T15:04:27.014038
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/AS1G06_145T01_9000000816_06227cztM0_level2.evt modeM0/AS1G06_145T01_9000000816_06227cztM0_level2_quad_clean.evt
Size (bytes)356,875,20057,274,560
Size340.3 MB 54.6 MB
Events in quadrant A3,061,941351,913
Events in quadrant B2,566,366362,541
Events in quadrant C2,069,832357,255
Events in quadrant D2,795,272337,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123392
B0106431
C094791
D0115601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4629932.009073%
B4629541.166559%
C462990.194426%
D4629471.015338%

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 5174 4630 9 9 0.17% 0.19%
B 5174 4630 15 15 0.29% 0.32%
C 5174 4630 0 0 0.00% 0.00%
D 5174 4630 25 25 0.48% 0.54%

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 13 34 897560 7991.44 538 527 112.2
A 8 15 43206 380.22 538 527 112.2
A 0 31 38285 336.38 538 527 112.2
B 0 187 191592 1812.89 544 530 105.4
B 0 219 140155 1324.83 544 530 105.4
B 15 204 36529 341.57 544 530 105.4
C 1 16 6630 49.81 527 529 122.5
C 13 61 4149 29.56 527 529 122.5
C 8 222 3896 27.49 527 529 122.5
D 12 221 371735 2837.83 526 508 130.8
D 2 63 207939 1585.7 526 508 130.8
D 2 136 141139 1075.05 526 508 130.8

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