ASTROSAT CZTI

Data Quality Report

Orbit 12991

Creation date: 2024-06-27T16:34:49.439319
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/AS1G08_055T01_9000001912_12991cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12991cztM0_level2_quad_clean.evt
Size (bytes)1,010,131,200184,193,280
Size963.3 MB 175.7 MB
Events in quadrant A6,730,2621,195,556
Events in quadrant B9,337,8501,121,106
Events in quadrant C6,103,1791,189,037
Events in quadrant D7,500,4431,133,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288673
B0366102
C0276192
D0317432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135921200.882872%
B13592159111.705415%
C13592480.353149%
D135923722.736904%

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 15248 13596 4 4 0.03% 0.03%
B 15248 13595 675 675 4.43% 4.97%
C 15248 13596 1 1 0.01% 0.01%
D 15248 13596 225 225 1.48% 1.65%

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 12 189 297596 911.38 1600 1566 324.8
A 1 162 99517 301.56 1600 1566 324.8
A 13 248 70875 213.38 1600 1566 324.8
B 4 239 2004336 7130.39 1475 1435 280.9
B 3 64 615247 2185.19 1475 1435 280.9
B 10 245 303716 1076.13 1475 1435 280.9
C 14 234 17246 43.63 1557 1563 359.4
C 13 61 11224 26.88 1557 1563 359.4
C 12 4 10140 23.86 1557 1563 359.4
D 1 52 1457866 3954.05 1533 1489 368.3
D 8 195 106824 285.98 1533 1489 368.3
D 10 157 78585 209.31 1533 1489 368.3

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