ASTROSAT CZTI

Data Quality Report

Orbit 43460

Creation date: 2024-06-27T22:52:14.043447
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/AS1A12_018T01_9000005874_43460cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43460cztM0_level2_quad_clean.evt
Size (bytes)305,061,12087,111,360
Size290.9 MB 83.1 MB
Events in quadrant A2,894,621581,728
Events in quadrant B2,580,683606,682
Events in quadrant C2,355,252582,539
Events in quadrant D3,072,802516,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116492
B0110999
C0101292
D0126522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4990220.440882%
B4989330.661455%
C498940.080176%
D49891513.026659%

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 7113 4991 17 17 0.24% 0.34%
B 7111 4989 23 23 0.32% 0.46%
C 7112 4990 1 1 0.01% 0.02%
D 7112 4990 160 160 2.25% 3.21%

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 551302 4998.09 540 529 110.2
A 15 222 173793 1572.31 540 529 110.2
A 15 237 53703 482.54 540 529 110.2
B 0 245 162826 1568.14 546 533 103.5
B 0 189 127666 1228.41 546 533 103.5
B 0 199 99487 956.13 546 533 103.5
C 15 214 219878 1743.64 538 543 125.8
C 3 233 29442 229.74 538 543 125.8
C 15 159 3688 25.0 538 543 125.8
D 13 249 469531 3648.5 524 510 128.6
D 1 52 303028 2353.28 524 510 128.6
D 7 96 90156 697.35 524 510 128.6

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