ASTROSAT CZTI

Data Quality Report

Orbit 16682

Creation date: 2024-06-27T17:26:08.949312
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/AS1A05_012T02_9000002468_16682cztM0_level2.evt modeM0/AS1A05_012T02_9000002468_16682cztM0_level2_quad_clean.evt
Size (bytes)1,003,452,480161,602,560
Size957.0 MB 154.1 MB
Events in quadrant A7,431,8321,019,718
Events in quadrant B5,975,8771,046,370
Events in quadrant C5,522,4861,011,662
Events in quadrant D10,635,187972,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305503
B0257962
C0248582
D0403732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122045494.498525%
B122041110.909538%
C12204900.737463%
D122046505.326123%

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 13385 12207 345 345 2.58% 2.83%
B 13385 12207 6 6 0.04% 0.05%
C 13385 12207 0 0 0.00% 0.00%
D 13385 12207 463 463 3.46% 3.79%

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 15 174 1496633 5334.99 1393 1364 280.3
A 12 96 310055 1101.38 1393 1364 280.3
A 9 143 257448 913.68 1393 1364 280.3
B 15 35 196700 723.33 1413 1375 270.0
B 0 229 120921 442.71 1413 1375 270.0
B 0 189 65252 236.55 1413 1375 270.0
C 14 238 206646 654.13 1349 1358 313.8
C 7 247 31946 97.47 1349 1358 313.8
C 8 128 12265 34.75 1349 1358 313.8
D 1 52 2748003 8446.57 1336 1298 325.2
D 2 16 1720044 5285.43 1336 1298 325.2
D 15 0 564771 1732.77 1336 1298 325.2

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