ASTROSAT CZTI

Data Quality Report

Orbit 30267

Creation date: 2024-06-27T20:12:54.186664
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/AS1A10_007T01_9000004350_30267cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30267cztM0_level2_quad_clean.evt
Size (bytes)781,390,080101,966,400
Size745.2 MB 97.2 MB
Events in quadrant A3,502,275725,230
Events in quadrant B12,479,269494,643
Events in quadrant C3,687,743729,787
Events in quadrant D3,579,870708,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142052
B0412362
C0150272
D0146283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143671.090672%
B6143441571.870422%
C61431232.002279%
D6142300.488440%

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 7513 6144 14 14 0.19% 0.23%
B 7512 6143 3553 3553 47.30% 57.84%
C 7513 6144 0 0 0.00% 0.00%
D 7512 6143 15 15 0.20% 0.24%

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 14 239 240859 1452.01 838 825 165.3
A 8 192 24202 141.41 838 825 165.3
A 13 254 11508 64.62 838 825 165.3
B 6 36 8690954 75939.38 610 596 114.4
B 6 159 1329175 11609.59 610 596 114.4
B 0 229 32624 279.87 610 596 114.4
C 3 233 300403 1560.05 826 836 192.0
C 14 238 139278 720.96 826 836 192.0
C 2 114 14641 71.89 826 836 192.0
D 8 195 249543 1244.73 820 803 199.8
D 2 250 59403 293.24 820 803 199.8
D 5 222 55040 271.41 820 803 199.8

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