ASTROSAT CZTI

Data Quality Report

Orbit 30851

Creation date: 2024-06-27T20:20:20.736624
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/AS1A10_071T40_9000004458_30851cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30851cztM0_level2_quad_clean.evt
Size (bytes)769,080,96094,783,680
Size733.5 MB 90.4 MB
Events in quadrant A3,894,045605,203
Events in quadrant B10,308,920574,426
Events in quadrant C4,181,052573,631
Events in quadrant D4,375,549569,353

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164420
B0361810
C0172560
D0176460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78743284.165608%
B7875137317.434921%
C78754045.130159%
D78753113.949206%

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 7874 7874 3 3 0.04% 0.04%
B 7875 7875 344 344 4.37% 4.37%
C 7875 7875 18 18 0.23% 0.23%
D 7875 7875 39 39 0.50% 0.50%

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 15 192 15457 70.36 1005 981 205.7
A 13 254 14592 66.16 1005 981 205.7
A 3 137 10459 46.07 1005 981 205.7
B 6 36 4227171 22765.82 955 928 185.6
B 6 159 2184709 11763.54 955 928 185.6
B 5 255 66141 351.29 955 928 185.6
C 14 238 151852 661.44 958 963 228.1
C 2 16 142958 622.45 958 963 228.1
C 0 10 107750 468.12 958 963 228.1
D 8 195 423829 1828.51 973 946 231.3
D 12 218 94965 406.53 973 946 231.3
D 2 250 93502 400.2 973 946 231.3

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