ASTROSAT CZTI

Data Quality Report

Orbit 25376

Creation date: 2024-06-27T19:16:58.059895
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/AS1A09_104T01_9000003710_25376cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25376cztM0_level2_quad_clean.evt
Size (bytes)525,772,80073,647,360
Size501.4 MB 70.2 MB
Events in quadrant A3,535,452459,947
Events in quadrant B3,547,695455,955
Events in quadrant C3,497,648434,488
Events in quadrant D4,895,076419,856

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143210
B0143550
C0141200
D0189250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65831322.005165%
B65831422.157071%
C65831572.384931%
D65833905.924351%

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 7733 6583 0 0 0.00% 0.00%
B 7733 6583 1 1 0.01% 0.02%
C 7733 6583 0 0 0.00% 0.00%
D 7733 6583 303 303 3.92% 4.60%

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 6 16 16460 86.93 911 896 179.0
A 13 254 10320 52.64 911 896 179.0
A 0 226 7863 38.91 911 896 179.0
B 0 190 37956 221.18 890 870 167.7
B 0 245 21928 125.59 890 870 167.7
B 12 111 19922 113.63 890 870 167.7
C 14 238 140210 704.08 858 867 197.9
C 0 207 8924 40.71 858 867 197.9
C 13 61 6050 26.19 858 867 197.9
D 7 238 929313 4411.51 871 847 210.5
D 8 195 513914 2437.79 871 847 210.5
D 1 52 73402 344.74 871 847 210.5

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