ASTROSAT CZTI

Data Quality Report

Orbit 31424

Creation date: 2024-06-27T20:28:08.820946
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_094T30_9000004566_31424cztM0_level2.evt modeM0/AS1A10_094T30_9000004566_31424cztM0_level2_quad_clean.evt
Size (bytes)594,564,480138,833,280
Size567.0 MB 132.4 MB
Events in quadrant A3,208,786982,251
Events in quadrant B7,009,928862,513
Events in quadrant C3,600,852972,240
Events in quadrant D3,766,444954,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133632
B0251212
C0145862
D0151822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621790.144764%
B6217123019.784462%
C62171552.493164%
D6216230.370013%

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 7547 6218 0 0 0.00% 0.00%
B 7546 6216 1025 1025 13.58% 16.49%
C 7547 6218 19 19 0.25% 0.31%
D 7546 6217 18 18 0.24% 0.29%

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 11572 66.15 831 817 162.6
A 3 137 7475 40.95 831 817 162.6
A 0 226 6923 37.56 831 817 162.6
B 12 1 2451277 17845.03 739 722 137.3
B 6 159 1542140 11224.66 739 722 137.3
B 4 80 60768 437.26 739 722 137.3
C 10 22 168509 894.78 820 829 187.4
C 14 238 142641 756.75 820 829 187.4
C 3 233 51759 271.78 820 829 187.4
D 8 195 433655 2231.28 824 805 194.0
D 1 52 91017 465.03 824 805 194.0
D 12 218 51662 262.16 824 805 194.0

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