ASTROSAT CZTI

Data Quality Report

Orbit 22886

Creation date: 2024-06-27T18:47:05.198200
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/AS1A08_009T01_9000003382_22886cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22886cztM0_level2_quad_clean.evt
Size (bytes)432,118,08096,770,880
Size412.1 MB 92.3 MB
Events in quadrant A2,948,433642,104
Events in quadrant B3,136,138647,494
Events in quadrant C2,901,846613,877
Events in quadrant D3,681,886597,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125681
B0131401
C0125681
D0147001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158610.990581%
B61591001.623640%
C6159600.974184%
D61591612.614061%

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 7293 6159 0 0 0.00% 0.00%
B 7294 6160 22 22 0.30% 0.36%
C 7294 6160 0 0 0.00% 0.00%
D 7294 6160 97 97 1.33% 1.57%

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 9634 58.37 763 746 152.3
A 0 226 6689 39.03 763 746 152.3
A 3 137 6187 35.73 763 746 152.3
B 3 64 127753 900.16 750 731 141.1
B 0 190 30175 208.66 750 731 141.1
B 0 228 26442 182.21 750 731 141.1
C 14 238 116033 703.86 714 717 163.8
C 13 61 5016 26.24 714 717 163.8
C 2 16 2659 11.85 714 717 163.8
D 1 52 334506 1894.96 727 705 176.2
D 7 238 237624 1344.97 727 705 176.2
D 12 233 158521 895.91 727 705 176.2

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