ASTROSAT CZTI

Data Quality Report

Orbit 25086

Creation date: 2024-06-27T19:13:40.284725
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_206T01_9000003672_25086cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25086cztM0_level2_quad_clean.evt
Size (bytes)739,154,88076,682,880
Size704.9 MB 73.1 MB
Events in quadrant A3,225,035506,339
Events in quadrant B3,494,344519,747
Events in quadrant C10,711,150417,607
Events in quadrant D4,527,539436,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012864
B012864
C012864
D012864

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132850
B0140910
C0361710
D0175950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325320.505929%
B63251292.039526%
C6325262141.438735%
D63254817.604743%

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 7625 6327 0 0 0.00% 0.00%
B 7625 6327 47 47 0.62% 0.74%
C 7625 6326 1996 1996 26.18% 31.55%
D 7625 6325 163 163 2.14% 2.58%

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 13 254 11455 63.82 833 817 166.7
A 0 226 7251 38.6 833 817 166.7
A 3 137 7063 37.47 833 817 166.7
B 15 32 117292 736.53 835 816 158.1
B 4 80 30830 189.79 835 816 158.1
B 0 229 30280 186.31 835 816 158.1
C 7 247 7725010 45544.1 729 737 169.6
C 14 238 113851 666.95 729 737 169.6
C 7 226 20051 113.88 729 737 169.6
D 1 52 897089 4916.67 750 730 182.3
D 8 195 401129 2196.25 750 730 182.3
D 12 233 133712 729.43 750 730 182.3

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