ASTROSAT CZTI

Data Quality Report

Orbit 25320

Creation date: 2024-06-27T19:16:20.353944
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/AS1A09_059T01_9000003706_25320cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25320cztM0_level2_quad_clean.evt
Size (bytes)608,785,920110,943,360
Size580.6 MB 105.8 MB
Events in quadrant A3,534,929733,733
Events in quadrant B3,708,262737,633
Events in quadrant C3,642,247708,795
Events in quadrant D7,050,126664,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153860
B0158370
C0154960
D0260410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7402460.621454%
B74031171.580440%
C74031161.566932%
D74036849.239498%

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 7812 7405 0 0 0.00% 0.00%
B 7813 7406 25 25 0.32% 0.34%
C 7813 7406 0 0 0.00% 0.00%
D 7813 7406 465 465 5.95% 6.28%

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 13 254 11760 58.77 916 896 184.9
A 3 137 8430 40.75 916 896 184.9
A 0 226 7800 37.35 916 896 184.9
B 3 112 131176 745.94 908 884 174.7
B 12 111 21107 115.78 908 884 174.7
B 11 111 19084 104.2 908 884 174.7
C 14 238 139837 673.22 882 887 206.4
C 9 54 28882 135.64 882 887 206.4
C 3 233 14496 65.94 882 887 206.4
D 1 52 1911801 9036.12 876 851 211.5
D 8 195 1427240 6744.82 876 851 211.5
D 12 235 160247 753.72 876 851 211.5

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