ASTROSAT CZTI

Data Quality Report

Orbit 01138

Creation date: 2024-06-27T14:08:06.963723
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/AS1P01_997T03_9000000216_01138cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01138cztM0_level2_quad_clean.evt
Size (bytes)1,087,709,760102,962,880
Size1.0 GB 98.2 MB
Events in quadrant A7,969,858669,509
Events in quadrant B8,400,066670,229
Events in quadrant C8,723,394650,161
Events in quadrant D7,392,036649,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286103
B0298122
C0308632
D0268662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A688140.058131%
B6881100.145328%
C6881951.380613%
D6881150.217992%

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 7826 6882 130 130 1.66% 1.89%
B 7826 6882 190 190 2.43% 2.76%
C 7826 6882 382 382 4.88% 5.55%
D 7826 6882 98 98 1.25% 1.42%

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 0 175 17167 30.25 2068 2081 498.7
A 12 243 12523 20.94 2068 2081 498.7
A 11 79 10853 17.59 2068 2081 498.7
B 15 22 47555 88.14 2176 2187 514.7
B 0 190 25643 45.57 2176 2187 514.7
B 5 249 17993 30.71 2176 2187 514.7
C 12 206 642914 1160.74 1971 2035 552.1
C 15 241 325748 586.3 1971 2035 552.1
C 3 111 22048 36.25 1971 2035 552.1
D 9 11 299698 511.41 1887 1956 582.2
D 13 252 16995 25.83 1887 1956 582.2
D 7 207 16721 25.36 1887 1956 582.2

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