ASTROSAT CZTI

Data Quality Report

Orbit 53799

Creation date: 2025-09-08T03:40:06.043311
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_022T04_9000006506_53799cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53799cztM0_level2_quad_clean.evt
Size (bytes)3,041,366,400180,322,560
Size2.8 GB 172.0 MB
Events in quadrant A47,293,20388,854
Events in quadrant B11,124,4781,791,943
Events in quadrant C20,997,8871,329,355
Events in quadrant D31,700,852935,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01536884
B0464944
C0757344
D01074935

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190541825195.785662%
B190558014.203621%
C19055384920.199423%
D19054820543.061824%

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 20798 19055 16692 16692 80.26% 87.60%
B 20800 19059 378 378 1.82% 1.98%
C 20800 19058 2898 2898 13.93% 15.21%
D 20799 19058 6938 6938 33.36% 36.40%

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 3 63 42175982 244723.44 691 673 172.3
A 3 78 2089108 12118.2 691 673 172.3
A 0 8 203223 1175.3 691 673 172.3
B 8 234 1223936 2939.13 1977 1909 415.8
B 7 0 702489 1684.98 1977 1909 415.8
B 5 250 497809 1192.7 1977 1909 415.8
C 15 224 12030236 24518.98 1795 1778 490.6
C 4 5 367210 744.9 1795 1778 490.6
C 12 2 351494 712.87 1795 1778 490.6
D 11 245 13648805 30791.5 1541 1470 443.2
D 1 241 2811447 6339.95 1541 1470 443.2
D 10 172 2594813 5851.17 1541 1470 443.2

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