ASTROSAT CZTI

Data Quality Report

Orbit 12848

Creation date: 2024-06-27T16:33:05.780242
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/AS1G08_071T01_9000001888_12848cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12848cztM0_level2_quad_clean.evt
Size (bytes)466,902,72093,810,240
Size445.3 MB 89.5 MB
Events in quadrant A3,123,676604,142
Events in quadrant B4,121,165589,840
Events in quadrant C2,972,272602,208
Events in quadrant D3,470,764580,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136373
B0164162
C0134562
D0149912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6651410.616449%
B66513044.570741%
C6651180.270636%
D6651360.541272%

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 7677 6653 0 0 0.00% 0.00%
B 7677 6653 193 193 2.51% 2.90%
C 7677 6653 0 0 0.00% 0.00%
D 7677 6653 20 20 0.26% 0.30%

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 12 189 81615 505.24 788 771 160.0
A 8 15 9587 55.1 788 771 160.0
A 0 226 7030 39.12 788 771 160.0
B 4 239 700996 4780.27 768 748 146.5
B 0 85 124854 847.21 768 748 146.5
B 0 219 69627 470.21 768 748 146.5
C 14 234 15466 83.91 758 762 175.2
C 13 61 5478 26.91 758 762 175.2
C 3 202 1843 6.17 758 762 175.2
D 1 52 387282 2116.67 756 737 182.6
D 13 172 131891 718.18 756 737 182.6
D 2 136 31832 170.27 756 737 182.6

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