ASTROSAT CZTI

Data Quality Report

Orbit 49697

Creation date: 2024-12-10T14:05:01.156886
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/AS1T05_233T01_9000006438_49697cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49697cztM0_level2_quad_clean.evt
Size (bytes)1,153,800,00051,681,600
Size1.1 GB 49.3 MB
Events in quadrant A15,027,479357,553
Events in quadrant B3,611,554632,278
Events in quadrant C7,566,04815,480
Events in quadrant D16,028,634122,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488740
B0149110
C0268170
D0518270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147569792.679356%
B61472023.286156%
C61466146100.000000%
D6146609999.235275%

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 6942 6146 5555 5555 80.02% 90.38%
B 6943 6149 106 106 1.53% 1.72%
C 6941 6145 518 518 7.46% 8.43%
D 6941 6145 5855 5855 84.35% 95.28%

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 83 6208845 53002.5 415 401 117.1
A 3 130 1626336 13880.87 415 401 117.1
A 12 50 1229007 10488.81 415 401 117.1
B 4 206 316345 2300.63 649 628 137.2
B 5 185 115930 840.2 649 628 137.2
B 1 255 97433 705.42 649 628 137.2
C 15 180 1698716 75801.84 36 33 22.4
C 15 190 1571977 70146.25 36 33 22.4
C 15 181 1304413 58206.51 36 33 22.4
D 15 40 4079487 59981.65 168 159 68.0
D 15 184 3573861 52547.02 168 159 68.0
D 15 168 1807196 26570.32 168 159 68.0

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