ASTROSAT CZTI

Data Quality Report

Orbit 50859

Creation date: 2025-02-22T02:02:21.292530
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_50859cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50859cztM0_level2_quad_clean.evt
Size (bytes)584,974,08097,398,720
Size557.9 MB 92.9 MB
Events in quadrant A4,538,425652,178
Events in quadrant B3,791,971714,013
Events in quadrant C7,637,675519,593
Events in quadrant D5,140,795574,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184702
B0162002
C0276572
D0200902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70242323.302961%
B70241872.662301%
C7025151221.523132%
D70244085.808656%

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 7594 7025 181 181 2.38% 2.58%
B 7594 7025 79 79 1.04% 1.12%
C 7595 7025 1168 1168 15.38% 16.63%
D 7594 7025 340 340 4.48% 4.84%

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 10 253 304279 1669.65 738 721 181.8
A 8 38 253019 1387.71 738 721 181.8
A 9 96 180651 989.66 738 721 181.8
B 4 206 335432 2155.66 737 711 155.3
B 8 128 133882 857.65 737 711 155.3
B 4 81 69179 440.95 737 711 155.3
C 4 5 3014740 16443.35 657 652 183.3
C 1 29 474159 2583.22 657 652 183.3
C 15 231 270283 1470.97 657 652 183.3
D 6 191 449468 2233.03 712 687 201.0
D 10 181 428869 2130.54 712 687 201.0
D 2 216 248365 1232.39 712 687 201.0

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