ASTROSAT CZTI

Data Quality Report

Orbit 55524

Creation date: 2026-01-21T17:45:35.589549
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/AS1A14_099T01_9000006536_55524cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55524cztM0_level2_quad_clean.evt
Size (bytes)482,621,760117,858,240
Size460.3 MB 112.4 MB
Events in quadrant A4,268,056765,624
Events in quadrant B4,014,240821,155
Events in quadrant C3,890,660726,412
Events in quadrant D5,053,845684,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188370
B0180790
C0180510
D0209620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82121451.765709%
B8213630.767077%
C8213820.998417%
D82131862.264702%

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 8212 8212 121 121 1.47% 1.47%
B 8213 8213 30 30 0.37% 0.37%
C 8213 8213 56 56 0.68% 0.68%
D 8213 8213 139 139 1.69% 1.69%

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 0 8 529699 2444.31 868 844 216.4
A 3 114 154356 709.52 868 844 216.4
A 4 159 124707 572.48 868 844 216.4
B 0 171 171496 930.67 859 828 183.4
B 7 0 134619 729.58 859 828 183.4
B 5 236 70922 382.23 859 828 183.4
C 13 3 213898 921.57 848 842 231.2
C 10 19 99610 427.22 848 842 231.2
C 14 254 54316 231.3 848 842 231.2
D 11 129 400353 1655.7 846 808 241.3
D 2 153 398499 1648.02 846 808 241.3
D 15 125 252364 1042.44 846 808 241.3

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