ASTROSAT CZTI

Data Quality Report

Orbit 20181006_A05_069T02_9000002414_level2

Creation date: 2025-11-25T02:16:36.911378
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/AS1A05_069T02_9000002414cztM0_level2.fits modeM0/AS1A05_069T02_9000002414cztM0_level2_quad_clean.evt
Size (bytes)627,609,600576,564,480
Size598.5 MB 549.9 MB
Events in quadrant A3,848,4343,401,356
Events in quadrant B3,695,3423,433,025
Events in quadrant C3,774,3743,256,190
Events in quadrant D3,259,9402,941,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01395850
B01436320
C01362570
D01504010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013160
B013160
C013160
D013160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6455914912.309515%
B6455913752.129835%
C6455911401.765827%
D6455916212.510882%

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 75065 64524 0 0 0.00% 0.00%
B 75065 64550 0 0 0.00% 0.00%
C 75065 64559 0 0 0.00% 0.00%
D 75065 64547 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 3604 10.93 1000 936 244.1
A 7 110 3127 8.97 1000 936 244.1
A 0 30 2862 7.89 1000 936 244.1
B 2 9 2979 10.69 979 934 191.3
B 2 8 2528 8.33 979 934 191.3
B 5 128 2459 7.97 979 934 191.3
C 1 81 2756 7.14 995 930 255.7
C 1 80 2712 6.97 995 930 255.7
C 12 241 2676 6.83 995 930 255.7
D 6 231 2385 6.13 932 848 250.7
D 10 189 2338 5.94 932 848 250.7
D 3 14 2306 5.81 932 848 250.7

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