ASTROSAT CZTI

Data Quality Report

Orbit 52013

Creation date: 2025-05-10T20:21:45.274137
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_9000006468_52013cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52013cztM0_level2_quad_clean.evt
Size (bytes)881,233,92089,651,520
Size840.4 MB 85.5 MB
Events in quadrant A6,991,340593,981
Events in quadrant B6,645,577661,341
Events in quadrant C7,050,248551,896
Events in quadrant D11,395,146420,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256261
B0246571
C0257611
D0387222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697881911.736887%
B69796589.428285%
C6979104514.973492%
D6978239834.365148%

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 7833 6978 706 706 9.01% 10.12%
B 7834 6979 376 376 4.80% 5.39%
C 7833 6978 1002 1002 12.79% 14.36%
D 7833 6978 2600 2600 33.19% 37.26%

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 95 2724532 15522.25 711 694 175.5
A 3 14 774570 4410.06 711 694 175.5
A 4 3 217123 1233.36 711 694 175.5
B 7 0 1780971 11709.44 712 687 152.0
B 12 32 603020 3961.72 712 687 152.0
B 5 185 453667 2979.38 712 687 152.0
C 15 224 3342391 18037.06 674 669 185.3
C 4 5 312254 1681.79 674 669 185.3
C 13 3 285095 1535.2 674 669 185.3
D 6 42 3139394 17811.7 618 591 176.2
D 12 17 2828697 16048.6 618 591 176.2
D 13 170 1249318 7086.13 618 591 176.2

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