ASTROSAT CZTI

Data Quality Report

Orbit 28220

Creation date: 2024-06-27T19:49:18.575479
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/AS1A10_045T09_9000004072_28220cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28220cztM0_level2_quad_clean.evt
Size (bytes)1,402,153,920200,416,320
Size1.3 GB 191.1 MB
Events in quadrant A9,296,8391,234,669
Events in quadrant B9,871,7171,251,191
Events in quadrant C9,064,8171,197,351
Events in quadrant D13,027,5691,157,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392350
B0406130
C0379930
D0506910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178242141.200628%
B178254442.490884%
C178253501.963534%
D178258414.718093%

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 19799 17824 23 23 0.12% 0.13%
B 19800 17825 195 195 0.98% 1.09%
C 19800 17825 41 41 0.21% 0.23%
D 19800 17825 657 657 3.32% 3.69%

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 16 846486 1957.37 2152 2109 431.4
A 12 194 147185 336.3 2152 2109 431.4
A 13 254 25945 55.25 2152 2109 431.4
B 10 245 1461001 3561.4 2122 2065 409.7
B 12 111 52462 123.02 2122 2065 409.7
B 11 111 47974 112.07 2122 2065 409.7
C 3 233 430960 887.98 2061 2071 483.0
C 14 238 326024 670.72 2061 2071 483.0
C 9 221 199552 408.87 2061 2071 483.0
D 1 52 3536380 7179.86 2061 2005 492.3
D 2 250 559866 1133.26 2061 2005 492.3
D 5 222 447065 904.11 2061 2005 492.3

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