ASTROSAT CZTI

Data Quality Report

Orbit 00652

Creation date: 2024-06-27T14:01:02.449146
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_126T04_9000000092_00652cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00652cztM0_level2_quad_clean.evt
Size (bytes)815,022,72035,870,400
Size777.3 MB 34.2 MB
Events in quadrant A6,272,057181,950
Events in quadrant B6,383,473185,726
Events in quadrant C5,608,023185,977
Events in quadrant D6,079,268173,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222512
B0225762
C0202892
D0217304

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5111180.352182%
B5111150.293485%
C511140.078263%
D51101032.015656%

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 7267 5112 172 172 2.37% 3.36%
B 7267 5112 158 158 2.17% 3.09%
C 7267 5112 41 41 0.56% 0.80%
D 7266 5111 227 227 3.12% 4.44%

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 14 79 82065 232.87 1561 1547 345.8
A 0 69 53560 150.43 1561 1547 345.8
A 0 238 49763 139.45 1561 1547 345.8
B 7 221 244661 660.36 1562 1573 368.1
B 4 172 106676 285.52 1562 1573 368.1
B 15 82 17112 42.21 1562 1573 368.1
C 9 52 19935 46.86 1414 1466 394.1
C 15 241 9371 20.06 1414 1466 394.1
C 9 188 8543 17.96 1414 1466 394.1
D 1 4 315438 733.75 1353 1407 428.0
D 13 221 123994 286.43 1353 1407 428.0
D 12 22 90462 208.08 1353 1407 428.0

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