ASTROSAT CZTI

Data Quality Report

Orbit 21580

Creation date: 2024-06-27T18:29:45.240558
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_182T02_9000003202_21580cztM0_level2.evt modeM0/AS1A05_182T02_9000003202_21580cztM0_level2_quad_clean.evt
Size (bytes)50,834,88015,431,040
Size48.5 MB 14.7 MB
Events in quadrant A346,232105,066
Events in quadrant B363,990111,072
Events in quadrant C358,581103,806
Events in quadrant D426,39896,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014071
B015011
C014761
D016661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60340.663350%
B60350.829187%
C603132.155887%
D603284.643449%

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 603 603 0 0 0.00% 0.00%
B 603 603 0 0 0.00% 0.00%
C 603 603 0 0 0.00% 0.00%
D 603 603 14 14 2.32% 2.32%

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 15 236 2311 113.01 88 87 19.7
A 15 48 1365 64.94 88 87 19.7
A 13 254 812 36.84 88 87 19.7
B 0 230 3740 191.27 91 89 19.1
B 0 244 2902 147.37 91 89 19.1
B 12 111 1922 96.03 91 89 19.1
C 14 238 13979 628.97 87 88 22.1
C 13 61 629 24.5 87 88 22.1
C 0 239 619 24.04 87 88 22.1
D 1 52 92087 4104.74 84 81 22.4
D 2 120 4212 184.3 84 81 22.4
D 2 136 3830 167.26 84 81 22.4

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