ASTROSAT CZTI

Data Quality Report

Orbit 52580

Creation date: 2025-06-18T00:23:11.282775
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/AS1C09_011T06_9000006478_52580cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52580cztM0_level2_quad_clean.evt
Size (bytes)709,315,20089,331,840
Size676.5 MB 85.2 MB
Events in quadrant A3,801,712633,134
Events in quadrant B4,362,400665,197
Events in quadrant C7,295,516510,333
Events in quadrant D10,280,148430,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161192
B0175272
C0261992
D0352346

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66752103.146067%
B66752113.161049%
C6676124718.678850%
D6675206930.996255%

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 7621 6677 135 135 1.77% 2.02%
B 7621 6676 118 118 1.55% 1.77%
C 7622 6677 1199 1199 15.73% 17.96%
D 7621 6676 2120 2120 27.82% 31.76%

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 4 249 330436 1874.65 706 689 175.9
A 5 243 267026 1514.15 706 689 175.9
A 3 114 130730 739.3 706 689 175.9
B 10 254 260940 1778.08 694 671 146.4
B 7 0 256369 1746.85 694 671 146.4
B 4 171 215128 1465.11 694 671 146.4
C 15 248 3827176 21597.61 639 632 177.2
C 13 3 363443 2047.76 639 632 177.2
C 15 224 237783 1338.52 639 632 177.2
D 6 42 4493838 25986.93 608 581 172.9
D 15 125 1429478 8264.08 608 581 172.9
D 11 245 776291 4486.35 608 581 172.9

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