ASTROSAT CZTI

Data Quality Report

Orbit 20181026_C04_007T07_9000002452_level2

Creation date: 2025-11-25T09:09:08.568021
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/AS1C04_007T07_9000002452cztM0_level2.fits modeM0/AS1C04_007T07_9000002452cztM0_level2_quad_clean.evt
Size (bytes)378,089,280394,516,800
Size360.6 MB 376.2 MB
Events in quadrant A2,280,4122,377,576
Events in quadrant B2,214,3022,420,167
Events in quadrant C2,196,2442,216,082
Events in quadrant D1,967,9462,144,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08260
B08260
C08260
D08260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0907790
B0884200
C01002750
D01003260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4063611192.753716%
B406366481.594645%
C4063625996.395807%
D4063610342.544542%

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 44881 40635 0 0 0.00% 0.00%
B 44881 40636 0 0 0.00% 0.00%
C 44881 40633 0 0 0.00% 0.00%
D 44881 40632 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 2198 11.02 593 552 149.3
A 7 110 1832 8.57 593 552 149.3
A 0 30 1750 8.02 593 552 149.3
B 2 9 1851 10.78 585 554 120.3
B 2 8 1533 8.14 585 554 120.3
B 3 17 1485 7.74 585 554 120.3
C 12 241 1607 7.08 580 538 151.0
C 3 126 1477 6.22 580 538 151.0
C 3 158 1458 6.09 580 538 151.0
D 3 14 1508 6.59 562 512 151.2
D 6 231 1447 6.19 562 512 151.2
D 7 3 1436 6.11 562 512 151.2

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