ASTROSAT CZTI

Data Quality Report

Orbit 17827

Creation date: 2024-06-27T17:41:23.672771
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/AS1A05_015T01_9000002650_17827cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17827cztM0_level2_quad_clean.evt
Size (bytes)460,874,88070,171,200
Size439.5 MB 66.9 MB
Events in quadrant A3,211,846418,758
Events in quadrant B3,384,416422,234
Events in quadrant C3,261,430407,925
Events in quadrant D3,642,235406,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139542
B0144192
C0139852
D0154132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6731761.129104%
B6732811.203209%
C6732971.440879%
D67321452.153892%

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 8476 6732 0 0 0.00% 0.00%
B 8477 6733 4 4 0.05% 0.06%
C 8477 6733 0 0 0.00% 0.00%
D 8477 6733 42 42 0.50% 0.62%

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 15 174 8835 47.6 830 812 168.5
A 0 226 7293 38.45 830 812 168.5
A 12 194 6305 32.59 830 812 168.5
B 7 220 44457 273.55 827 804 159.6
B 4 216 31128 190.02 827 804 159.6
B 0 230 22842 138.1 827 804 159.6
C 14 238 122333 649.27 798 801 187.2
C 5 218 16461 83.66 798 801 187.2
C 1 16 7661 36.65 798 801 187.2
D 7 238 464672 2366.01 805 786 196.1
D 10 70 82148 414.98 805 786 196.1
D 2 234 28446 141.08 805 786 196.1

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