ASTROSAT CZTI

Data Quality Report

Orbit 29274

Creation date: 2024-06-27T20:02:08.375890
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/AS1A10_045T08_9000004208_29274cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29274cztM0_level2_quad_clean.evt
Size (bytes)684,486,720101,471,040
Size652.8 MB 96.8 MB
Events in quadrant A3,484,543650,633
Events in quadrant B3,973,989659,414
Events in quadrant C6,556,466627,111
Events in quadrant D6,215,887621,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151641
B0165591
C0247561
D0236326

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7381420.569029%
B7382971.314007%
C73826528.832295%
D73812373.210947%

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 7731 7382 0 0 0.00% 0.00%
B 7732 7383 6 6 0.08% 0.08%
C 7732 7382 70 70 0.91% 0.95%
D 7731 7382 173 173 2.24% 2.34%

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 1 113 20561 108.13 897 878 182.0
A 13 254 14698 75.92 897 878 182.0
A 3 137 9148 45.43 897 878 182.0
B 10 245 183925 1059.79 892 871 172.7
B 0 229 158112 910.35 892 871 172.7
B 0 183 112911 648.66 892 871 172.7
C 3 233 3004213 15194.46 837 842 197.7
C 14 238 181512 914.03 837 842 197.7
C 14 254 73543 367.8 837 842 197.7
D 1 52 1251448 5974.58 861 840 209.3
D 8 195 1060583 5062.75 861 840 209.3
D 7 238 288254 1373.07 861 840 209.3

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