ASTROSAT CZTI

Data Quality Report

Orbit 50943

Creation date: 2025-02-27T17:39:46.369493
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_001T01_9000006450_50943cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50943cztM0_level2_quad_clean.evt
Size (bytes)764,288,64073,229,760
Size728.9 MB 69.8 MB
Events in quadrant A10,891,861300,337
Events in quadrant B3,616,311602,386
Events in quadrant C6,590,049460,485
Events in quadrant D6,742,793446,810

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364781
B0148201
C0235846
D0240461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5824311053.399725%
B58253335.716738%
C5824120320.655907%
D5824101817.479396%

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 6934 5825 2925 2925 42.18% 50.21%
B 6935 5826 117 117 1.69% 2.01%
C 6934 5825 960 960 13.84% 16.48%
D 6934 5825 889 889 12.82% 15.26%

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 8 43 6899704 60878.98 456 445 113.3
A 12 80 817715 7211.58 456 445 113.3
A 12 3 735730 6488.15 456 445 113.3
B 4 206 412972 3173.1 612 591 130.0
B 10 247 246920 1895.4 612 591 130.0
B 4 171 169976 1303.35 612 591 130.0
C 5 10 2319019 14635.58 562 555 158.4
C 4 12 920060 5804.48 562 555 158.4
C 14 245 340568 2146.37 562 555 158.4
D 8 176 3877633 24039.9 570 549 161.3
D 2 249 126317 779.83 570 549 161.3
D 3 12 73793 454.15 570 549 161.3

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