ASTROSAT CZTI

Data Quality Report

Orbit 21377

Creation date: 2024-06-27T18:27:04.108737
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_21377cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21377cztM0_level2_quad_clean.evt
Size (bytes)485,377,920115,346,880
Size462.9 MB 110.0 MB
Events in quadrant A2,940,941809,600
Events in quadrant B3,028,230808,899
Events in quadrant C3,076,518750,419
Events in quadrant D5,260,877719,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122901
B0125761
C0128381
D0195521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5792570.984116%
B5793941.622648%
C57931061.829795%
D579364511.134127%

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 7002 5792 2 2 0.03% 0.03%
B 7003 5793 21 21 0.30% 0.36%
C 7003 5793 6 6 0.09% 0.10%
D 7003 5793 584 584 8.34% 10.08%

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 42243 280.78 741 727 147.9
A 5 16 39535 262.46 741 727 147.9
A 13 254 7664 46.92 741 727 147.9
B 0 190 67161 490.88 726 709 135.4
B 0 230 46695 339.7 726 709 135.4
B 3 64 34196 247.37 726 709 135.4
C 3 233 275102 1736.8 688 692 158.0
C 14 238 112351 706.71 688 692 158.0
C 10 91 7511 43.16 688 692 158.0
D 1 52 2352646 14279.89 688 667 164.7
D 7 238 105127 634.22 688 667 164.7
D 12 235 52959 317.49 688 667 164.7

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