ASTROSAT CZTI

Data Quality Report

Orbit 20151009_P01_134T02_9000000010_level2

Creation date: 2025-01-05T03:31:20.197754
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_134T02_9000000010cztM0_level2.fits modeM0/AS1P01_134T02_9000000010cztM0_level2_quad_clean.evt
Size (bytes)131,690,88038,822,400
Size125.6 MB 37.0 MB
Events in quadrant A800,17417,252
Events in quadrant B615,18217,932
Events in quadrant C816,02217,250
Events in quadrant D647,40614,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687250
B01028730
C0652110
D0803550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16041240.149617%
B16037456128.440481%
C16038260.162115%
D1604014368.952618%

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 20871 16035 0 0 0.00% 0.00%
B 20875 15167 0 0 0.00% 0.00%
C 20873 16034 0 0 0.00% 0.00%
D 20870 15971 0 0 0.00% 0.00%

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 7 110 773 11.45 208 196 50.4
A 0 29 629 8.6 208 196 50.4
A 14 30 560 7.23 208 196 50.4
B 2 9 537 12.01 163 156 31.7
B 5 225 407 7.91 163 156 31.7
B 3 17 398 7.63 163 156 31.7
C 3 203 727 9.45 216 200 55.7
C 3 202 612 7.39 216 200 55.7
C 12 241 553 6.33 216 200 55.7
D 6 231 512 7.28 186 172 46.7
D 11 82 496 6.94 186 172 46.7
D 6 44 483 6.66 186 172 46.7

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