ASTROSAT CZTI

Data Quality Report

Orbit 50713

Creation date: 2025-02-12T08:18:37.559343
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/AS1C09_003T01_9000006448_50713cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50713cztM0_level2_quad_clean.evt
Size (bytes)697,599,36092,672,640
Size665.3 MB 88.4 MB
Events in quadrant A4,013,164649,039
Events in quadrant B4,325,674704,750
Events in quadrant C8,730,801476,931
Events in quadrant D8,213,830490,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164822
B0178174
C0307922
D0292962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69591592.284811%
B69582783.995401%
C6958214330.799080%
D6958151221.730382%

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 7914 6960 82 82 1.04% 1.18%
B 7913 6959 153 153 1.93% 2.20%
C 7913 6959 1495 1495 18.89% 21.48%
D 7913 6959 1331 1331 16.82% 19.13%

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 4 3 322161 1775.04 731 710 181.1
A 9 191 254332 1400.49 731 710 181.1
A 5 240 121140 665.01 731 710 181.1
B 7 0 346562 2239.52 729 703 154.4
B 0 229 170115 1096.98 729 703 154.4
B 5 185 156354 1007.88 729 703 154.4
C 5 10 5520610 32584.72 606 600 169.4
C 4 5 164131 965.33 606 600 169.4
C 13 3 117073 687.54 606 600 169.4
D 8 176 4213301 23867.38 633 611 176.5
D 11 245 335023 1894.64 633 611 176.5
D 1 47 308876 1746.5 633 611 176.5

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