ASTROSAT CZTI

Data Quality Report

Orbit 15909

Creation date: 2024-06-27T17:15:01.059085
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/AS1A04_143T01_9000002344_15909cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15909cztM0_level2_quad_clean.evt
Size (bytes)471,723,84096,549,120
Size449.9 MB 92.1 MB
Events in quadrant A3,684,347616,264
Events in quadrant B3,423,052643,343
Events in quadrant C3,380,545606,871
Events in quadrant D3,344,352591,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152893
B0144492
C0141992
D0145812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66811311.960784%
B6681991.481814%
C66811051.571621%
D6681671.002844%

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 9163 6685 29 29 0.32% 0.43%
B 9163 6685 4 4 0.04% 0.06%
C 9163 6685 0 0 0.00% 0.00%
D 9163 6685 19 19 0.21% 0.28%

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 15 239 336332 1967.56 846 827 170.5
A 3 80 52737 304.42 846 827 170.5
A 15 157 32436 185.37 846 827 170.5
B 4 173 35785 214.02 856 836 163.3
B 12 111 19097 111.83 856 836 163.3
B 11 111 15916 92.35 856 836 163.3
C 14 238 125365 649.19 820 828 191.8
C 3 233 52037 266.94 820 828 191.8
C 7 247 5986 26.89 820 828 191.8
D 12 17 122582 602.31 825 802 202.2
D 13 172 41788 202.71 825 802 202.2
D 1 52 32887 158.69 825 802 202.2

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