ASTROSAT CZTI

Data Quality Report

Orbit 54234

Creation date: 2025-10-07T10:11:55.481493
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_004T08_9000006514_54234cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54234cztM0_level2_quad_clean.evt
Size (bytes)2,674,480,320195,981,120
Size2.5 GB 186.9 MB
Events in quadrant A20,073,4841,326,543
Events in quadrant B11,813,0001,831,627
Events in quadrant C18,679,4101,313,629
Events in quadrant D46,981,370161,193

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0727863
B0485893
C0690723
D01521853

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18853412221.863894%
B188547213.824122%
C18854387320.542060%
D188541714790.946218%

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 20003 18856 3106 3106 15.53% 16.47%
B 20004 18857 363 363 1.81% 1.93%
C 20004 18856 2995 2995 14.97% 15.88%
D 20003 18854 15970 15970 79.84% 84.70%

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 12 17 4994333 11583.94 1754 1715 431.0
A 7 29 3143917 7290.58 1754 1715 431.0
A 8 249 1012944 2346.27 1754 1715 431.0
B 4 171 769205 1878.42 1938 1870 408.5
B 5 236 704362 1719.69 1938 1870 408.5
B 8 234 694946 1696.64 1938 1870 408.5
C 15 215 7381915 15738.94 1703 1687 468.9
C 1 241 1924592 4100.75 1703 1687 468.9
C 15 216 1558426 3319.87 1703 1687 468.9
D 8 176 43040927 236329.82 635 606 182.1
D 3 12 449334 2463.92 635 606 182.1
D 12 2 230529 1262.48 635 606 182.1

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