ASTROSAT CZTI

Data Quality Report

Orbit 50589

Creation date: 2025-02-04T08:41:56.917114
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/AS1T05_239T01_9000006444_50589cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50589cztM0_level2_quad_clean.evt
Size (bytes)2,326,619,520210,211,200
Size2.2 GB 200.5 MB
Events in quadrant A11,049,5341,666,263
Events in quadrant B20,097,4681,522,482
Events in quadrant C25,752,2021,036,194
Events in quadrant D27,801,355864,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450233
B0725842
C08949625
D0953582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185463982.146015%
B18546326817.621050%
C18360632234.433551%
D18482810743.864300%

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 19636 18548 178 178 0.91% 0.96%
B 19636 18548 2390 2390 12.17% 12.89%
C 19636 18362 5118 5118 26.06% 27.87%
D 19636 18484 7144 7144 36.38% 38.65%

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 3 589996 1225.27 1951 1900 480.0
A 4 4 368402 763.59 1951 1900 480.0
A 4 78 333283 690.42 1951 1900 480.0
B 4 170 5319905 13652.39 1833 1771 389.5
B 7 0 2178980 5589.2 1833 1771 389.5
B 5 172 1750310 4488.74 1833 1771 389.5
C 15 236 5228880 12373.9 1522 1514 422.5
C 15 178 1804608 4268.17 1522 1514 422.5
C 15 196 1564247 3699.21 1522 1514 422.5
D 7 61 11889761 26250.33 1590 1533 452.9
D 7 126 1697670 3745.23 1590 1533 452.9
D 8 48 982136 2165.26 1590 1533 452.9

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