ASTROSAT CZTI

Data Quality Report

Orbit 41450

Creation date: 2024-06-27T22:29:13.834780
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/AS1T05_100T01_9000005668_41450cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41450cztM0_level2_quad_clean.evt
Size (bytes)361,036,800103,282,560
Size344.3 MB 98.5 MB
Events in quadrant A3,502,796690,521
Events in quadrant B2,906,843712,565
Events in quadrant C3,589,840653,177
Events in quadrant D2,865,901624,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139923
B0130662
C0145172
D0132292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6409310.483695%
B640950.078015%
C64092383.713528%
D6409130.202840%

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 9486 6411 15 15 0.16% 0.23%
B 9486 6411 1 1 0.01% 0.02%
C 9486 6411 229 229 2.41% 3.57%
D 9486 6411 10 10 0.11% 0.16%

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 10 83 593995 4045.84 713 697 146.6
A 13 248 114436 775.61 713 697 146.6
A 2 79 29140 193.96 713 697 146.6
B 0 190 102360 738.18 707 688 137.7
B 12 111 17918 125.1 707 688 137.7
B 11 111 16382 113.94 707 688 137.7
C 0 10 663259 4143.26 681 685 159.9
C 15 214 264587 1650.25 681 685 159.9
C 12 249 5876 32.46 681 685 159.9
D 13 249 84456 493.2 696 677 169.9
D 1 47 27470 157.73 696 677 169.9
D 12 233 26122 149.79 696 677 169.9

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