ASTROSAT CZTI

Data Quality Report

Orbit 00622

Creation date: 2024-06-27T14:00:42.778997
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/AS1P01_116T01_9000000086_00622cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00622cztM0_level2_quad_clean.evt
Size (bytes)785,442,24064,056,960
Size749.1 MB 61.1 MB
Events in quadrant A5,884,458396,434
Events in quadrant B6,134,591409,221
Events in quadrant C5,598,952400,900
Events in quadrant D5,834,866380,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210522
B0217861
C0202111
D0209631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501710.019932%
B5017210.418577%
C501750.099661%
D5017981.953359%

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 7172 5018 106 106 1.48% 2.11%
B 7172 5018 138 138 1.92% 2.75%
C 7172 5018 34 34 0.47% 0.68%
D 7172 5018 217 217 3.03% 4.32%

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 0 238 33720 98.24 1498 1480 328.2
A 0 117 24476 70.07 1498 1480 328.2
A 0 69 17173 47.82 1498 1480 328.2
B 7 221 244714 700.02 1506 1510 347.4
B 0 220 27985 76.2 1506 1510 347.4
B 5 191 26714 72.55 1506 1510 347.4
C 15 241 39181 96.3 1408 1461 391.7
C 3 159 29854 72.48 1408 1461 391.7
C 9 206 4452 7.63 1408 1461 391.7
D 1 4 356928 852.2 1348 1401 417.2
D 13 221 106317 251.48 1348 1401 417.2
D 13 155 56942 133.13 1348 1401 417.2

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