ASTROSAT CZTI

Data Quality Report

Orbit 21108

Creation date: 2024-06-27T18:23:40.156738
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/AS1A05_163T01_9000003118_21108cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21108cztM0_level2_quad_clean.evt
Size (bytes)679,173,12099,768,960
Size647.7 MB 95.1 MB
Events in quadrant A4,278,976626,342
Events in quadrant B5,332,660606,720
Events in quadrant C4,220,450607,035
Events in quadrant D6,153,901583,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183142
B0212022
C0180153
D0242462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86032703.138440%
B86046898.007903%
C86032903.370917%
D86032913.382541%

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 9378 8606 0 0 0.00% 0.00%
B 9379 8606 220 220 2.35% 2.56%
C 9378 8606 0 0 0.00% 0.00%
D 9378 8606 49 49 0.52% 0.57%

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 34 101084 454.7 1082 1057 220.0
A 13 254 13640 57.2 1082 1057 220.0
A 3 137 9297 37.46 1082 1057 220.0
B 0 182 883074 4240.86 1061 1033 208.0
B 7 220 190490 910.91 1061 1033 208.0
B 0 198 25762 118.9 1061 1033 208.0
C 14 238 158896 641.45 1037 1043 246.1
C 7 221 20682 79.8 1037 1043 246.1
C 13 61 7334 25.56 1037 1043 246.1
D 1 20 1807964 7090.07 1045 1016 254.9
D 10 199 112428 437.16 1045 1016 254.9
D 1 52 62939 242.97 1045 1016 254.9

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