ASTROSAT CZTI

Data Quality Report

Orbit 20181029_T03_024T01_9000002472_level2

Creation date: 2025-11-25T13:12:17.086397
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/AS1T03_024T01_9000002472cztM0_level2.fits modeM0/AS1T03_024T01_9000002472cztM0_level2_quad_clean.evt
Size (bytes)1,231,649,2801,214,328,960
Size1.1 GB 1.1 GB
Events in quadrant A7,614,9477,631,204
Events in quadrant B7,562,9067,885,306
Events in quadrant C7,749,4827,522,686
Events in quadrant D5,546,6084,933,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01790
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03509050
B02898970
C02870430
D06024360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026140
B026160
C026160
D026160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12850495697.446461%
B12848423831.854706%
C12850727122.110391%
D1284313983331.015098%

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 146786 128547 0 0 0.00% 0.00%
B 146786 128594 0 0 0.00% 0.00%
C 146786 128622 0 0 0.00% 0.00%
D 146786 126036 0 0 0.00% 0.00%

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 29 7288 11.14 1982 1859 487.4
A 7 110 6305 9.12 1982 1859 487.4
A 0 30 5840 8.17 1982 1859 487.4
B 2 9 6112 10.82 1996 1905 389.0
B 2 8 5069 8.13 1996 1905 389.0
B 5 128 5009 7.98 1996 1905 389.0
C 12 241 5312 6.48 2047 1915 523.8
C 3 126 5276 6.42 2047 1915 523.8
C 2 191 5219 6.31 2047 1915 523.8
D 6 231 3985 5.99 1585 1445 423.9
D 10 189 3860 5.7 1585 1445 423.9
D 6 67 3848 5.67 1585 1445 423.9

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