ASTROSAT CZTI

Data Quality Report

Orbit 20919

Creation date: 2024-06-27T18:21:12.945961
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_9000003082_20919cztM0_level2.evt modeM0/AS1C04_001T01_9000003082_20919cztM0_level2_quad_clean.evt
Size (bytes)505,779,840134,412,480
Size482.3 MB 128.2 MB
Events in quadrant A4,711,737906,135
Events in quadrant B3,672,017916,098
Events in quadrant C3,271,669877,289
Events in quadrant D3,183,776880,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187461
B0154871
C0144021
D0144391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70492143.035892%
B70501241.758865%
C70501091.546099%
D7050891.262411%

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 7574 7051 46 46 0.61% 0.65%
B 7575 7052 27 27 0.36% 0.38%
C 7575 7052 0 0 0.00% 0.00%
D 7575 7052 3 3 0.04% 0.04%

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 1466136 8674.88 842 823 168.9
A 0 226 7490 39.47 842 823 168.9
A 3 137 6773 35.22 842 823 168.9
B 7 220 297446 1883.36 832 812 157.5
B 0 228 27154 167.25 832 812 157.5
B 0 219 25986 159.83 832 812 157.5
C 14 238 127649 685.27 801 804 185.1
C 5 4 7824 37.92 801 804 185.1
C 13 61 5590 25.86 801 804 185.1
D 2 234 33718 165.3 823 799 199.1
D 1 52 33464 164.02 823 799 199.1
D 2 153 12871 60.62 823 799 199.1

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