ASTROSAT CZTI

Data Quality Report

Orbit 10770

Creation date: 2024-06-27T16:03:47.188717
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/AS1G07_057T03_9000001552_10770cztM0_level2.evt modeM0/AS1G07_057T03_9000001552_10770cztM0_level2_quad_clean.evt
Size (bytes)227,358,72055,238,400
Size216.8 MB 52.7 MB
Events in quadrant A1,440,333368,787
Events in quadrant B1,858,093372,569
Events in quadrant C1,286,792381,021
Events in quadrant D2,110,630352,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060701
B072961
C056141
D082371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2765260.940325%
B27651374.954792%
C276510.036166%
D27651083.905967%

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 2765 2765 20 20 0.72% 0.72%
B 2765 2765 105 105 3.80% 3.80%
C 2765 2765 0 0 0.00% 0.00%
D 2765 2765 85 85 3.07% 3.07%

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 15 223 94239 1406.27 325 318 66.8
A 15 239 45489 676.34 325 318 66.8
A 14 254 18880 277.93 325 318 66.8
B 4 239 512305 8287.36 328 321 61.8
B 0 218 21268 339.06 328 321 61.8
B 15 204 12986 205.01 328 321 61.8
C 13 61 2516 28.79 329 330 75.9
C 8 222 1898 20.65 329 330 75.9
C 3 202 861 6.99 329 330 75.9
D 10 199 270605 3543.07 321 312 76.3
D 8 195 176057 2303.71 321 312 76.3
D 7 71 145501 1903.17 321 312 76.3

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