ASTROSAT CZTI

Data Quality Report

Orbit 16179

Creation date: 2024-06-27T17:18:59.808529
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/AS1T02_109T01_9000002386_16179cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16179cztM0_level2_quad_clean.evt
Size (bytes)510,652,80091,264,320
Size487.0 MB 87.0 MB
Events in quadrant A3,260,467588,294
Events in quadrant B3,228,796599,211
Events in quadrant C3,347,993568,085
Events in quadrant D5,183,231551,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013979156
B013776158
C014162152
D020020160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544901.375306%
B6543751.146263%
C6553661.007172%
D65435187.916858%

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 7705 6608 26 26 0.34% 0.39%
B 7705 6612 4 4 0.05% 0.06%
C 7705 6615 0 0 0.00% 0.00%
D 7705 6613 435 435 5.65% 6.58%

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 15 174 143676 876.12 805 790 163.1
A 8 247 18696 109.79 805 790 163.1
A 0 226 7099 38.68 805 790 163.1
B 0 229 23775 147.92 803 781 155.4
B 0 182 17843 109.76 803 781 155.4
B 12 111 17749 109.16 803 781 155.4
C 7 247 152002 845.37 764 769 178.9
C 14 238 119410 663.18 764 769 178.9
C 3 233 88717 491.62 764 769 178.9
D 5 222 1916067 10217.1 760 738 187.5
D 10 70 177291 941.8 760 738 187.5
D 2 33 94955 502.59 760 738 187.5

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