ASTROSAT CZTI

Data Quality Report

Orbit 22011

Creation date: 2024-06-27T18:35:17.066968
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_153T02_9000003250_22011cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_22011cztM0_level2_quad_clean.evt
Size (bytes)435,888,00080,029,440
Size415.7 MB 76.3 MB
Events in quadrant A2,849,664513,860
Events in quadrant B2,932,234523,924
Events in quadrant C2,877,607498,164
Events in quadrant D4,138,649473,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122481
B0123841
C0122861
D0162221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5926270.455619%
B5926380.641242%
C5927601.012317%
D59272754.639784%

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 6956 5926 0 0 0.00% 0.00%
B 6956 5926 8 8 0.12% 0.13%
C 6957 5927 0 0 0.00% 0.00%
D 6957 5927 253 253 3.64% 4.27%

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 15 236 30370 203.17 730 716 146.0
A 13 254 10148 64.62 730 716 146.0
A 0 226 6272 38.07 730 716 146.0
B 3 64 77578 560.46 725 706 137.2
B 12 111 16153 112.62 725 706 137.2
B 11 111 14843 103.07 725 706 137.2
C 14 238 112253 670.41 708 711 166.4
C 0 10 5610 29.44 708 711 166.4
C 13 61 4845 24.85 708 711 166.4
D 7 238 857270 5021.77 702 681 170.6
D 1 52 415793 2433.6 702 681 170.6
D 13 172 109185 636.11 702 681 170.6

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