ASTROSAT CZTI

Data Quality Report

Orbit 21374

Creation date: 2024-06-27T18:27:02.433655
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/AS1C04_001T01_9000003156_21374cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21374cztM0_level2_quad_clean.evt
Size (bytes)515,004,48098,625,600
Size491.1 MB 94.1 MB
Events in quadrant A3,243,462646,978
Events in quadrant B3,407,336655,615
Events in quadrant C3,116,029621,608
Events in quadrant D5,375,239595,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137572
B0143532
C0136382
D0204872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704420.626492%
B6704901.342482%
C6704650.969570%
D67044416.578162%

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 7694 6704 0 0 0.00% 0.00%
B 7694 6704 23 23 0.30% 0.34%
C 7694 6704 0 0 0.00% 0.00%
D 7694 6704 386 386 5.02% 5.76%

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 5 168 111577 684.33 810 793 161.9
A 13 254 8936 50.3 810 793 161.9
A 0 226 6981 38.22 810 793 161.9
B 3 64 117218 763.15 805 786 152.6
B 0 230 41619 267.64 805 786 152.6
B 0 197 29713 189.6 805 786 152.6
C 14 238 120719 668.81 766 770 179.3
C 3 233 6942 34.41 766 770 179.3
C 13 61 5454 26.12 766 770 179.3
D 1 52 2124016 11419.68 766 742 185.9
D 7 238 152267 814.95 766 742 185.9
D 5 32 57549 305.52 766 742 185.9

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