ASTROSAT CZTI

Data Quality Report

Orbit 50792

Creation date: 2025-02-17T15:12:00.292947
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_50792cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50792cztM0_level2_quad_clean.evt
Size (bytes)1,928,695,680243,325,440
Size1.8 GB 232.1 MB
Events in quadrant A11,681,1261,688,430
Events in quadrant B10,553,3351,896,492
Events in quadrant C33,579,088932,367
Events in quadrant D14,091,6511,520,306

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480283
B0453803
C01130273
D0553203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192888374.339486%
B192895192.690653%
C19289894346.363212%
D192898494.401472%

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 20328 19290 492 492 2.42% 2.55%
B 20329 19290 199 199 0.98% 1.03%
C 20329 19290 7990 7990 39.30% 41.42%
D 20329 19291 666 666 3.28% 3.45%

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 4 249 1631917 3238.82 2017 1964 503.3
A 11 3 638180 1264.2 2017 1964 503.3
A 4 3 212887 419.12 2017 1964 503.3
B 4 170 668038 1547.66 2022 1952 430.4
B 5 185 493745 1142.68 2022 1952 430.4
B 4 206 346625 800.85 2022 1952 430.4
C 5 10 12261562 29586.02 1487 1472 414.4
C 1 44 7077200 17075.13 1487 1472 414.4
C 4 210 2279488 5497.3 1487 1472 414.4
D 2 249 1152792 2119.56 1943 1875 543.0
D 2 216 941317 1730.1 1943 1875 543.0
D 7 126 834715 1533.78 1943 1875 543.0

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