ASTROSAT CZTI

Data Quality Report

Orbit 51035

Creation date: 2025-03-05T22:07:33.308044
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/AS1C07_001T02_9000006452_51035cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51035cztM0_level2_quad_clean.evt
Size (bytes)751,561,92089,876,160
Size716.7 MB 85.7 MB
Events in quadrant A6,859,630604,690
Events in quadrant B7,004,459548,385
Events in quadrant C6,723,800536,420
Events in quadrant D6,695,830547,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252252
B0256890
C0247220
D0247470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69416369.162945%
B6942161223.220974%
C694298414.174589%
D69425818.369346%

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 6941 6941 478 478 6.89% 6.89%
B 6942 6942 705 705 10.16% 10.16%
C 6942 6942 844 844 12.16% 12.16%
D 6942 6942 565 565 8.14% 8.14%

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 10 253 1557824 8983.7 706 689 173.3
A 12 80 598613 3449.65 706 689 173.3
A 12 3 570323 3286.43 706 689 173.3
B 12 32 2138606 16196.31 619 598 132.0
B 4 81 1255165 9503.87 619 598 132.0
B 5 185 284427 2150.12 619 598 132.0
C 4 5 1569299 8564.16 665 660 183.2
C 13 49 480120 2617.67 665 660 183.2
C 15 224 351775 1916.95 665 660 183.2
D 8 176 1706888 8969.94 678 657 190.2
D 2 216 772145 4055.84 678 657 190.2
D 6 173 353305 1853.93 678 657 190.2

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