ASTROSAT CZTI

Data Quality Report

Orbit 11012

Creation date: 2024-06-27T16:06:59.604978
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/AS1C03_004T01_9000001598_11012cztM0_level2.evt modeM0/AS1C03_004T01_9000001598_11012cztM0_level2_quad_clean.evt
Size (bytes)682,871,040104,454,720
Size651.2 MB 99.6 MB
Events in quadrant A9,073,714565,893
Events in quadrant B3,945,760727,506
Events in quadrant C3,003,828734,626
Events in quadrant D4,222,799686,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03146665
B01586620
C01316210
D01693120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424219734.199875%
B64312503.887420%
C6431170.264345%
D6430701.088647%

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 7635 6434 1777 1777 23.27% 27.62%
B 7635 6435 156 156 2.04% 2.42%
C 7635 6436 0 0 0.00% 0.00%
D 7635 6436 34 34 0.45% 0.53%

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 14 238 6224113 47520.48 646 633 131.0
A 8 5 302071 2301.68 646 633 131.0
A 13 210 14591 106.58 646 633 131.0
B 4 239 822189 5747.09 771 752 142.9
B 15 204 29136 198.59 771 752 142.9
B 0 187 26197 178.02 771 752 142.9
C 13 61 5747 28.4 769 776 175.0
C 3 202 1961 6.77 769 776 175.0
C 14 234 1859 6.19 769 776 175.0
D 11 129 789000 4377.82 753 732 180.1
D 1 52 299632 1660.0 753 732 180.1
D 5 223 70780 389.02 753 732 180.1

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