ASTROSAT CZTI

Data Quality Report

Orbit 39793

Creation date: 2024-06-27T22:09:04.298546
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_022T01_9000005498_39793cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39793cztM0_level2_quad_clean.evt
Size (bytes)557,078,40083,278,080
Size531.3 MB 79.4 MB
Events in quadrant A3,828,327630,322
Events in quadrant B2,723,814652,432
Events in quadrant C9,183,547345,911
Events in quadrant D4,489,777535,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146774
B0112291
C0307931
D0166465

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51002304.509804%
B5101440.862576%
C5101253049.598118%
D50984388.591605%

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 7074 5102 160 160 2.26% 3.14%
B 7074 5102 27 27 0.38% 0.53%
C 7074 5102 2248 2248 31.78% 44.06%
D 7074 5101 308 308 4.35% 6.04%

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 9 143 543828 4491.45 596 584 121.0
A 10 83 439929 3632.43 596 584 121.0
A 13 248 374402 3090.67 596 584 121.0
B 5 255 199124 1754.81 593 579 113.1
B 5 172 50967 445.35 593 579 113.1
B 15 85 43160 376.35 593 579 113.1
C 9 187 6255031 57133.87 471 474 109.5
C 15 208 850836 7767.85 471 474 109.5
C 15 214 181336 1652.13 471 474 109.5
D 12 227 1025263 7398.37 569 553 138.5
D 7 38 541863 3908.24 569 553 138.5
D 2 249 271284 1954.67 569 553 138.5

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