ASTROSAT CZTI

Data Quality Report

Orbit 20181214_T03_033T01_9000002568_level2

Creation date: 2025-11-26T14:48:03.832925
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_033T01_9000002568cztM0_level2.fits modeM0/AS1T03_033T01_9000002568cztM0_level2_quad_clean.evt
Size (bytes)400,489,920352,310,400
Size381.9 MB 336.0 MB
Events in quadrant A2,478,4722,039,937
Events in quadrant B2,378,4382,057,956
Events in quadrant C2,417,6461,953,802
Events in quadrant D1,889,8361,656,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0889260
B0898160
C0887960
D01694750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08780
B08780
C08780
D08780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A431353180.737220%
B431355001.159152%
C431355631.305205%
D43135759317.602875%

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 47245 43133 0 0 0.00% 0.00%
B 47245 43132 0 0 0.00% 0.00%
C 47245 43133 0 0 0.00% 0.00%
D 47245 42987 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 2385 10.8 645 601 165.1
A 7 110 2001 8.48 645 601 165.1
A 0 30 1919 7.98 645 601 165.1
B 2 9 2035 11.31 628 597 127.1
B 2 8 1685 8.56 628 597 127.1
B 3 17 1568 7.64 628 597 127.1
C 12 241 1692 6.64 639 594 165.4
C 3 126 1657 6.43 639 594 165.4
C 3 158 1625 6.23 639 594 165.4
D 3 14 1406 6.27 540 490 146.0
D 3 31 1339 5.81 540 490 146.0
D 6 38 1337 5.8 540 490 146.0

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