ASTROSAT CZTI

Data Quality Report

Orbit 25174

Creation date: 2024-06-27T19:14:35.186877
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/AS1A07_018T02_9000003684_25174cztM0_level2.evt modeM0/AS1A07_018T02_9000003684_25174cztM0_level2_quad_clean.evt
Size (bytes)481,161,60095,270,400
Size458.9 MB 90.9 MB
Events in quadrant A3,102,956623,012
Events in quadrant B3,237,084636,867
Events in quadrant C3,579,092611,814
Events in quadrant D4,247,101595,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130150
B0133250
C0146890
D0166490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5976460.769746%
B5976711.188086%
C59771432.392505%
D59773646.090012%

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 7216 5977 0 0 0.00% 0.00%
B 7216 5977 2 2 0.03% 0.03%
C 7217 5978 7 7 0.10% 0.12%
D 7217 5978 232 232 3.21% 3.88%

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 10324 59.34 804 789 160.7
A 3 137 7122 39.41 804 789 160.7
A 0 226 6770 37.22 804 789 160.7
B 3 64 74570 485.96 805 786 151.8
B 12 111 17907 112.76 805 786 151.8
B 11 111 16481 103.37 805 786 151.8
C 7 247 289458 1567.16 787 794 184.2
C 14 238 125251 675.68 787 794 184.2
C 8 208 33820 179.3 787 794 184.2
D 12 233 753478 3974.38 780 760 189.4
D 8 195 269387 1418.36 780 760 189.4
D 1 52 220648 1161.02 780 760 189.4

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