ASTROSAT CZTI

Data Quality Report

Orbit 13237

Creation date: 2024-06-27T16:38:13.644759
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/AS1G08_077T01_9000001970_13237cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13237cztM0_level2_quad_clean.evt
Size (bytes)746,087,04081,757,440
Size711.5 MB 78.0 MB
Events in quadrant A4,186,870515,411
Events in quadrant B8,991,340390,913
Events in quadrant C3,413,726531,470
Events in quadrant D5,476,802496,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174572
B0318381
C0157411
D0216111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77701962.522523%
B7770256833.050193%
C7770490.630631%
D77706738.661519%

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 8296 7772 107 107 1.29% 1.38%
B 8296 7771 1887 1887 22.75% 24.28%
C 8296 7772 1 1 0.01% 0.01%
D 8296 7772 534 534 6.44% 6.87%

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 15 239 569947 3157.21 886 866 180.2
A 12 189 180610 997.2 886 866 180.2
A 1 162 19471 103.22 886 866 180.2
B 4 239 6116975 45962.17 696 677 133.1
B 0 214 35165 259.16 696 677 133.1
B 0 219 33169 244.16 696 677 133.1
C 15 208 38112 186.93 865 867 199.3
C 13 61 6358 27.56 865 867 199.3
C 14 234 3306 12.24 865 867 199.3
D 10 157 1948539 9606.76 833 807 202.7
D 8 195 149660 734.18 833 807 202.7
D 5 222 73589 358.98 833 807 202.7

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