ASTROSAT CZTI

Data Quality Report

Orbit 20180301_A04_017T01_9000001932_level2

Creation date: 2025-01-04T15:26:52.932697
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/AS1A04_017T01_9000001932cztM0_level2.fits modeM0/AS1A04_017T01_9000001932cztM0_level2_quad_clean.evt
Size (bytes)491,408,640385,646,400
Size468.6 MB 367.8 MB
Events in quadrant A2,996,1642,155,664
Events in quadrant B2,696,1041,754,352
Events in quadrant C3,144,5802,303,580
Events in quadrant D2,254,6461,686,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480720
B01812680
C01131470
D02243230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504252839.598125%
B550421089719.797609%
C550425500.999237%
D550421491927.104756%

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 68203 54823 0 0 0.00% 0.00%
B 68203 53377 0 0 0.00% 0.00%
C 68203 55042 0 0 0.00% 0.00%
D 68203 54804 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 2909 11.25 781 732 193.5
A 7 110 2481 9.04 781 732 193.5
A 0 30 2264 7.92 781 732 193.5
B 2 9 2362 11.85 711 678 142.1
B 3 17 1900 8.6 711 678 142.1
B 5 128 1739 7.46 711 678 142.1
C 12 241 2341 7.26 829 769 216.6
C 1 80 2336 7.24 829 769 216.6
C 1 81 2284 7.0 829 769 216.6
D 6 231 1725 6.47 643 584 176.3
D 3 14 1674 6.18 643 584 176.3
D 7 3 1614 5.84 643 584 176.3

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