ASTROSAT CZTI

Data Quality Report

Orbit 12439

Creation date: 2024-06-27T16:27:23.887864
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_174T01_9000001850_12439cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12439cztM0_level2_quad_clean.evt
Size (bytes)872,447,04097,341,120
Size832.0 MB 92.8 MB
Events in quadrant A11,039,580603,661
Events in quadrant B5,899,786565,166
Events in quadrant C3,652,288650,712
Events in quadrant D5,327,072607,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380312
B0223821
C0156771
D0207061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7474150220.096334%
B747491712.269200%
C7474660.883061%
D74742353.144233%

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 7855 7475 560 560 7.13% 7.49%
B 7854 7474 570 570 7.26% 7.63%
C 7855 7476 25 25 0.32% 0.33%
D 7855 7475 143 143 1.82% 1.91%

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 23 6089260 33767.22 876 860 180.3
A 13 251 701776 3887.39 876 860 180.3
A 0 226 432684 2394.96 876 860 180.3
B 4 239 1927596 11830.13 848 827 162.9
B 3 64 404150 2476.35 848 827 162.9
B 0 219 84142 511.54 848 827 162.9
C 15 208 134656 645.41 890 901 207.2
C 14 234 38163 179.8 890 901 207.2
C 8 128 6611 27.55 890 901 207.2
D 1 52 1551598 7236.43 883 859 214.3
D 7 80 152543 707.82 883 859 214.3
D 7 71 130184 603.49 883 859 214.3

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