ASTROSAT CZTI

Data Quality Report

Orbit 09916

Creation date: 2024-06-27T15:52:11.357884
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/AS1A03_009T01_9000001412_09916cztM0_level2.evt modeM0/AS1A03_009T01_9000001412_09916cztM0_level2_quad_clean.evt
Size (bytes)495,028,80081,624,960
Size472.1 MB 77.8 MB
Events in quadrant A3,234,937501,457
Events in quadrant B3,414,709512,854
Events in quadrant C3,122,097510,311
Events in quadrant D4,761,529476,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141993
B0146442
C0139012
D0185462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754590.873556%
B6754901.332544%
C6754350.518211%
D67542804.145691%

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 9333 6753 13 13 0.14% 0.19%
B 9333 6753 2 2 0.02% 0.03%
C 9335 6755 3 3 0.03% 0.04%
D 9335 6755 223 223 2.39% 3.30%

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 14 254 109892 670.46 807 791 162.7
A 15 174 9091 51.01 807 791 162.7
A 0 226 7543 41.49 807 791 162.7
B 0 214 69468 439.5 820 800 156.2
B 4 81 34001 212.5 820 800 156.2
B 4 239 25351 157.14 820 800 156.2
C 9 221 17553 91.78 794 799 182.5
C 13 61 6039 28.71 794 799 182.5
C 14 67 3568 15.17 794 799 182.5
D 8 195 482225 2441.93 766 744 197.2
D 10 253 375198 1899.12 766 744 197.2
D 2 152 181338 915.92 766 744 197.2

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