ASTROSAT CZTI

Data Quality Report

Orbit 20190718_A05_088T03_9000003042_level2

Creation date: 2025-12-02T12:48:48.431400
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/AS1A05_088T03_9000003042cztM0_level2.fits modeM0/AS1A05_088T03_9000003042cztM0_level2_quad_clean.evt
Size (bytes)209,108,160221,592,960
Size199.4 MB 211.3 MB
Events in quadrant A1,330,6161,425,213
Events in quadrant B1,255,2441,406,792
Events in quadrant C1,291,9341,359,303
Events in quadrant D1,089,1261,153,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04060
C04080
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425890
B0444320
C0425550
D0539390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198172661.342282%
B198172961.493667%
C198233611.821117%
D1982812736.420214%

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 22916 18222 0 0 0.00% 0.00%
B 22916 18224 0 0 0.00% 0.00%
C 22916 18221 0 0 0.00% 0.00%
D 22916 18200 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 0 29 1278 10.88 347 327 87.4
A 9 19 1042 8.18 347 327 87.4
A 7 110 1026 8.0 347 327 87.4
B 2 9 1011 10.37 332 318 66.8
B 5 128 855 8.04 332 318 66.8
B 2 8 838 7.78 332 318 66.8
C 12 249 876 6.25 341 321 88.7
C 12 241 874 6.23 341 321 88.7
C 2 191 857 6.04 341 321 88.7
D 10 189 848 6.72 311 285 83.8
D 7 5 779 5.9 311 285 83.8
D 6 231 778 5.88 311 285 83.8

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