ASTROSAT CZTI

Data Quality Report

Orbit 53055

Creation date: 2025-07-21T10:54:22.733927
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_011T07_9000006488_53055cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53055cztM0_level2_quad_clean.evt
Size (bytes)1,001,465,28082,172,160
Size955.1 MB 78.4 MB
Events in quadrant A8,398,781531,699
Events in quadrant B5,828,582642,009
Events in quadrant C12,177,635370,930
Events in quadrant D10,116,812447,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297836
B0223631
C0411137
D0350441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118171724.121944%
B711890712.742343%
C7117332246.676971%
D7119220630.987498%

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 7163 7119 1518 1518 21.19% 21.32%
B 7163 7119 635 635 8.87% 8.92%
C 7163 7119 2982 2982 41.63% 41.89%
D 7164 7120 1963 1963 27.40% 27.57%

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 7 206 2482731 14533.9 692 677 170.8
A 9 191 1785728 10452.53 692 677 170.8
A 15 190 664359 3886.25 692 677 170.8
B 10 63 1317478 8854.77 700 677 148.7
B 1 255 1100063 7392.77 700 677 148.7
B 4 81 194922 1306.19 700 677 148.7
C 1 241 4324916 27152.1 568 562 159.3
C 15 224 2815345 17673.68 568 562 159.3
C 15 244 1288715 8088.16 568 562 159.3
D 8 176 3095363 16504.57 647 614 187.5
D 12 17 2067214 11021.36 647 614 187.5
D 2 172 720277 3838.03 647 614 187.5

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