ASTROSAT CZTI

Data Quality Report

Orbit 15387

Creation date: 2024-06-27T17:07:49.900054
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_001T01_9000002270_15387cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15387cztM0_level2_quad_clean.evt
Size (bytes)620,288,640100,071,360
Size591.6 MB 95.4 MB
Events in quadrant A4,231,771649,109
Events in quadrant B6,808,547610,857
Events in quadrant C3,230,184689,574
Events in quadrant D4,101,534653,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165572
B0243341
C0135761
D0163521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61024497.358243%
B6102136622.386103%
C6102600.983284%
D61021742.851524%

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 7353 6103 224 224 3.05% 3.67%
B 7353 6104 1126 1126 15.31% 18.45%
C 7353 6104 0 0 0.00% 0.00%
D 7353 6103 91 91 1.24% 1.49%

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 999011 6991.53 719 705 142.8
A 14 237 413849 2893.41 719 705 142.8
A 9 143 27516 187.77 719 705 142.8
B 10 245 3461826 27033.36 696 679 128.0
B 0 245 151305 1176.47 696 679 128.0
B 7 220 145860 1133.94 696 679 128.0
C 3 233 318072 1882.9 740 746 168.5
C 7 247 23077 132.5 740 746 168.5
C 13 61 5387 27.54 740 746 168.5
D 13 122 375453 2088.6 737 716 179.4
D 7 38 243980 1355.84 737 716 179.4
D 2 33 197031 1094.17 737 716 179.4

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