ASTROSAT CZTI

Data Quality Report

Orbit 20170321_G06_154T01_9000001100_level2

Creation date: 2025-11-10T05:56:13.939893
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/AS1G06_154T01_9000001100cztM0_level2.fits modeM0/AS1G06_154T01_9000001100cztM0_level2_quad_clean.evt
Size (bytes)489,320,640483,914,880
Size466.7 MB 461.5 MB
Events in quadrant A2,914,8062,831,433
Events in quadrant B2,837,8802,865,413
Events in quadrant C2,921,5282,767,210
Events in quadrant D2,486,7662,534,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010800
B010800
C010760
D010800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01098090
B01111030
C01093370
D01299400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533348431.580605%
B533099311.746422%
C533245000.937664%
D5331019253.610955%

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 59482 53162 0 0 0.00% 0.00%
B 59482 53153 0 0 0.00% 0.00%
C 59482 53167 0 0 0.00% 0.00%
D 59482 53118 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 2846 10.9 756 702 196.7
A 7 110 2369 8.47 756 702 196.7
A 0 30 2222 7.73 756 702 196.7
B 2 9 2516 11.8 747 705 153.4
B 2 8 1961 8.19 747 705 153.4
B 3 17 1905 7.82 747 705 153.4
C 12 241 2132 6.91 771 709 205.8
C 1 80 2073 6.63 771 709 205.8
C 1 81 2028 6.41 771 709 205.8
D 3 14 1927 6.85 705 639 188.2
D 3 31 1812 6.23 705 639 188.2
D 6 231 1807 6.21 705 639 188.2

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