ASTROSAT CZTI

Data Quality Report

Orbit 31790

Creation date: 2024-06-27T20:32:47.226158
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/AS1T04_041T01_9000004642_31790cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31790cztM0_level2_quad_clean.evt
Size (bytes)578,266,56099,244,800
Size551.5 MB 94.6 MB
Events in quadrant A4,236,783640,242
Events in quadrant B5,238,218657,080
Events in quadrant C3,865,490622,956
Events in quadrant D3,723,479622,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167592
B0205112
C0157112
D0154113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66342523.798613%
B66341161.748568%
C66342483.738318%
D6633590.889492%

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 7519 6635 128 128 1.70% 1.93%
B 7519 6635 8 8 0.11% 0.12%
C 7519 6635 69 69 0.92% 1.04%
D 7518 6634 16 16 0.21% 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 0 13 994297 5992.81 837 821 165.8
A 13 254 12575 70.9 837 821 165.8
A 13 6 10223 56.71 837 821 165.8
B 6 159 1732889 10855.22 836 815 159.6
B 10 245 119312 742.64 836 815 159.6
B 5 255 45361 279.17 836 815 159.6
C 0 10 317441 1684.89 805 812 187.9
C 3 233 208434 1104.83 805 812 187.9
C 14 238 133354 705.3 805 812 187.9
D 8 195 417803 2109.87 824 804 197.6
D 12 218 73495 367.79 824 804 197.6
D 2 250 52790 263.03 824 804 197.6

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