ASTROSAT CZTI

Data Quality Report

Orbit 23880

Creation date: 2024-06-27T18:59:42.373430
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/AS1A07_142T01_9000003540_23880cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23880cztM0_level2_quad_clean.evt
Size (bytes)1,102,691,520189,866,880
Size1.0 GB 181.1 MB
Events in quadrant A7,539,7531,192,082
Events in quadrant B7,833,9171,206,961
Events in quadrant C7,651,9811,149,865
Events in quadrant D9,315,7631,126,424

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321853
B0328163
C0323743
D0376713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155791350.866551%
B155801390.892169%
C155802311.482670%
D155793932.522627%

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 18384 15582 0 0 0.00% 0.00%
B 18385 15583 5 5 0.03% 0.03%
C 18385 15583 8 8 0.04% 0.05%
D 18384 15582 243 243 1.32% 1.56%

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 13 254 26335 62.55 1953 1910 390.5
A 0 226 17117 38.95 1953 1910 390.5
A 3 137 16935 38.48 1953 1910 390.5
B 0 189 92861 250.17 1929 1881 363.7
B 12 111 44568 117.38 1929 1881 363.7
B 11 111 39753 104.14 1929 1881 363.7
C 14 238 296019 681.32 1863 1878 431.7
C 0 10 82552 186.86 1863 1878 431.7
C 0 239 18568 38.66 1863 1878 431.7
D 1 52 1039806 2248.1 1897 1844 461.7
D 7 238 922512 1994.06 1897 1844 461.7
D 8 195 103880 221.0 1897 1844 461.7

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