ASTROSAT CZTI

Data Quality Report

Orbit 23726

Creation date: 2024-06-27T18:57:59.844457
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_027T06_9000003508_23726cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23726cztM0_level2_quad_clean.evt
Size (bytes)510,675,84069,370,560
Size487.0 MB 66.2 MB
Events in quadrant A3,339,266413,306
Events in quadrant B3,907,930419,984
Events in quadrant C3,449,119407,281
Events in quadrant D4,310,397388,160

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139392
B0155557
C0141162
D0169572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6773260.383877%
B67721081.594802%
C6772991.461902%
D67721562.303603%

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 7833 6774 0 0 0.00% 0.00%
B 7831 6772 36 36 0.46% 0.53%
C 7832 6773 1 1 0.01% 0.01%
D 7832 6773 123 123 1.57% 1.82%

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 12080 64.44 866 850 174.3
A 3 137 7467 37.97 866 850 174.3
A 0 226 7429 37.75 866 850 174.3
B 0 229 317243 1951.79 866 847 162.1
B 15 33 70956 432.49 866 847 162.1
B 10 249 49440 299.76 866 847 162.1
C 14 238 133638 676.4 838 843 196.3
C 7 247 35077 174.37 838 843 196.3
C 0 207 10876 51.1 838 843 196.3
D 1 52 391951 1925.74 832 809 203.1
D 7 238 276518 1357.42 832 809 203.1
D 12 233 270730 1328.92 832 809 203.1

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