ASTROSAT CZTI

Data Quality Report

Orbit 20760

Creation date: 2024-06-27T18:19:17.491661
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_013T01_9000003070_20760cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20760cztM0_level2_quad_clean.evt
Size (bytes)553,098,24098,317,440
Size527.5 MB 93.8 MB
Events in quadrant A3,248,578648,015
Events in quadrant B3,400,827643,353
Events in quadrant C3,270,159621,903
Events in quadrant D6,369,534589,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141561
B0145631
C0142652
D0237233

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6802400.588062%
B6802570.837989%
C6801520.764593%
D68006108.970588%

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 7257 6804 8 8 0.11% 0.12%
B 7257 6803 19 19 0.26% 0.28%
C 7256 6803 2 2 0.03% 0.03%
D 7256 6803 459 459 6.33% 6.75%

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 5 16 97455 589.49 819 804 164.0
A 0 226 6893 37.14 819 804 164.0
A 3 137 6724 36.11 819 804 164.0
B 3 64 138141 892.09 806 785 154.0
B 0 197 27040 170.52 806 785 154.0
B 0 190 22154 138.79 806 785 154.0
C 7 247 135570 747.25 770 774 180.4
C 14 238 121145 667.29 770 774 180.4
C 7 220 6736 33.05 770 774 180.4
D 5 222 1310981 7247.06 752 732 180.8
D 1 52 759177 4195.0 752 732 180.8
D 12 227 678783 3750.34 752 732 180.8

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