ASTROSAT CZTI

Data Quality Report

Orbit 03461

Creation date: 2024-06-27T14:29:22.069343
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/AS1G05_209T01_9000000458_03461cztM0_level2.evt modeM0/AS1G05_209T01_9000000458_03461cztM0_level2_quad_clean.evt
Size (bytes)435,792,960104,160,960
Size415.6 MB 99.3 MB
Events in quadrant A2,981,138669,738
Events in quadrant B3,644,294672,077
Events in quadrant C3,169,120696,167
Events in quadrant D2,964,868666,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136793
B0153702
C0142502
D0136722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6446570.884269%
B64461181.830593%
C6446470.729134%
D6446330.511945%

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 7556 6447 25 25 0.33% 0.39%
B 7556 6447 53 53 0.70% 0.82%
C 7556 6447 28 28 0.37% 0.43%
D 7556 6447 21 21 0.28% 0.33%

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 0 118 113911 797.88 702 687 141.9
A 0 149 61360 427.56 702 687 141.9
A 0 50 40275 278.97 702 687 141.9
B 15 204 492555 3658.38 715 698 134.4
B 0 219 201523 1493.71 715 698 134.4
B 4 239 84139 620.62 715 698 134.4
C 6 80 164809 1017.27 701 708 161.3
C 14 223 159767 986.02 701 708 161.3
C 1 192 71921 441.45 701 708 161.3
D 13 223 76238 450.8 692 672 167.6
D 5 233 71611 423.19 692 672 167.6
D 13 25 55845 329.14 692 672 167.6

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