ASTROSAT CZTI

Data Quality Report

Orbit 52835

Creation date: 2025-07-16T09:27:52.707774
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_011T08_9000006482_52835cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52835cztM0_level2_quad_clean.evt
Size (bytes)927,722,88091,267,200
Size884.7 MB 87.0 MB
Events in quadrant A9,874,970562,670
Events in quadrant B10,498,920539,556
Events in quadrant C7,035,695558,247
Events in quadrant D6,356,993584,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344890
B0363661
C0264760
D0241040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7445189425.439893%
B7444243332.684041%
C7445145019.476158%
D744579010.611148%

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 7445 7445 1586 1586 21.30% 21.30%
B 7444 7444 1745 1745 23.44% 23.44%
C 7445 7445 1067 1067 14.33% 14.33%
D 7445 7445 597 597 8.02% 8.02%

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 9 191 3870021 21236.23 724 707 182.2
A 3 62 943709 5175.54 724 707 182.2
A 3 14 708448 3884.35 724 707 182.2
B 8 3 5320768 36157.85 697 672 147.1
B 10 254 1227017 8334.81 697 672 147.1
B 6 203 447163 3034.56 697 672 147.1
C 15 224 2835619 14506.01 699 690 195.4
C 4 5 435878 2226.81 699 690 195.4
C 2 12 353479 1805.18 699 690 195.4
D 12 17 1045162 5007.01 732 699 208.6
D 3 224 778429 3728.33 732 699 208.6
D 8 176 499419 2390.79 732 699 208.6

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