ASTROSAT CZTI

Data Quality Report

Orbit 49639

Creation date: 2024-12-03T17:05:57.478176
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_49639cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49639cztM0_level2_quad_clean.evt
Size (bytes)1,276,528,32037,932,480
Size1.2 GB 36.2 MB
Events in quadrant A15,802,176160
Events in quadrant B5,872,438644,575
Events in quadrant C8,130,231778
Events in quadrant D16,910,50320,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516831
B0222241
C0289171
D0549734

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6928692799.985566%
B692881711.792725%
C6929692599.942272%
D6928675097.430716%

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 7682 6927 5145 5145 66.97% 74.27%
B 7683 6928 602 602 7.84% 8.69%
C 7683 6928 1057 1057 13.76% 15.26%
D 7682 6927 6352 6352 82.69% 91.70%

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 99 5461244 83197.92 188 179 65.6
A 10 83 2985696 45483.58 188 179 65.6
A 3 130 2518500 38365.97 188 179 65.6
B 4 206 1285940 8566.76 702 682 150.0
B 3 232 776758 5172.86 702 682 150.0
B 5 173 260464 1731.55 702 682 150.0
C 15 180 2232790 81026.7 45 42 27.6
C 15 181 1613226 58542.65 45 42 27.6
C 15 163 912511 33113.61 45 42 27.6
D 15 40 4866826 43473.37 257 240 111.9
D 7 45 3169364 28309.89 257 240 111.9
D 7 61 1432487 12794.31 257 240 111.9

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