ASTROSAT CZTI

Data Quality Report

Orbit 17459

Creation date: 2024-06-27T17:36:48.916603
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/AS1T03_067T01_9000002582_17459cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17459cztM0_level2_quad_clean.evt
Size (bytes)552,769,92078,071,040
Size527.2 MB 74.5 MB
Events in quadrant A3,144,181490,339
Events in quadrant B4,056,389491,080
Events in quadrant C3,208,755469,468
Events in quadrant D5,879,828449,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136951
B0163761
C0137561
D0219871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66511392.089911%
B66522754.134095%
C66521552.330126%
D665279411.936260%

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 7276 6651 1 1 0.01% 0.02%
B 7277 6652 66 66 0.91% 0.99%
C 7277 6652 0 0 0.00% 0.00%
D 7277 6653 531 531 7.30% 7.98%

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 0 226 7414 40.15 814 796 164.8
A 15 191 6617 35.32 814 796 164.8
A 12 194 6292 33.34 814 796 164.8
B 7 220 458110 2957.9 808 788 154.6
B 15 35 192245 1238.32 808 788 154.6
B 4 216 129601 833.15 808 788 154.6
C 14 238 119031 654.97 774 777 180.5
C 3 233 32796 177.34 774 777 180.5
C 5 218 28465 153.35 774 777 180.5
D 11 176 1689113 9198.18 760 738 183.6
D 13 189 742154 4039.2 760 738 183.6
D 13 232 200959 1090.79 760 738 183.6

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