ASTROSAT CZTI

Data Quality Report

Orbit 13401

Creation date: 2024-06-27T16:40:15.249876
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/AS1A04_103T01_9000001988_13401cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13401cztM0_level2_quad_clean.evt
Size (bytes)468,388,80068,572,800
Size446.7 MB 65.4 MB
Events in quadrant A3,345,165408,170
Events in quadrant B3,550,668413,922
Events in quadrant C3,420,296403,624
Events in quadrant D3,419,362388,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142643
B0148002
C0144062
D0145892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615731.103553%
B6615811.224490%
C6615640.967498%
D6615560.846561%

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 7860 6615 0 0 0.00% 0.00%
B 7860 6615 10 10 0.13% 0.15%
C 7861 6616 8 8 0.10% 0.12%
D 7860 6615 16 16 0.20% 0.24%

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 0 226 7676 39.23 866 849 174.0
A 1 162 7530 38.39 866 849 174.0
A 12 194 6541 32.7 866 849 174.0
B 3 64 90217 555.51 865 846 160.9
B 0 214 42696 260.13 865 846 160.9
B 0 230 21015 125.36 865 846 160.9
C 14 220 78252 406.95 834 839 190.2
C 3 233 75603 393.02 834 839 190.2
C 6 253 11425 55.65 834 839 190.2
D 8 195 115377 576.53 832 807 198.7
D 1 52 100099 499.65 832 807 198.7
D 2 136 26650 130.05 832 807 198.7

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