ASTROSAT CZTI

Data Quality Report

Orbit 15035

Creation date: 2024-06-27T17:02:51.460943
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/AS1A04_218T03_9000002214_15035cztM0_level2.evt modeM0/AS1A04_218T03_9000002214_15035cztM0_level2_quad_clean.evt
Size (bytes)461,560,32099,636,480
Size440.2 MB 95.0 MB
Events in quadrant A3,439,953640,016
Events in quadrant B3,375,802657,247
Events in quadrant C3,495,413645,978
Events in quadrant D3,222,331617,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143813
B0142172
C0143892
D0140172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6551280.427416%
B6551450.686918%
C6551340.519005%
D6551530.809037%

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 8817 6554 1 1 0.01% 0.02%
B 8817 6554 7 7 0.08% 0.11%
C 8817 6554 0 0 0.00% 0.00%
D 8817 6554 19 19 0.22% 0.29%

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 12 189 90712 543.66 822 805 165.4
A 1 162 85769 513.77 822 805 165.4
A 1 178 39472 233.82 822 805 165.4
B 10 16 42484 265.77 827 808 156.8
B 4 173 32801 204.02 827 808 156.8
B 0 229 31161 193.56 827 808 156.8
C 3 233 326827 1726.37 812 817 188.8
C 13 61 5761 26.18 812 817 188.8
C 10 22 3354 13.43 812 817 188.8
D 2 136 118138 603.24 804 781 194.5
D 2 234 22520 111.74 804 781 194.5
D 2 152 14528 70.66 804 781 194.5

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