ASTROSAT CZTI

Data Quality Report

Orbit 27327

Creation date: 2024-06-27T19:38:54.701717
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/AS1T03_255T01_9000003922_27327cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27327cztM0_level2_quad_clean.evt
Size (bytes)517,271,040105,307,200
Size493.3 MB 100.4 MB
Events in quadrant A3,615,823711,448
Events in quadrant B3,793,724711,979
Events in quadrant C3,494,905663,694
Events in quadrant D4,331,588659,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149620
B0153900
C0145430
D0173850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341951.498186%
B63411352.129002%
C63411412.223624%
D6340901.419558%

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 7591 6341 0 0 0.00% 0.00%
B 7591 6341 13 13 0.17% 0.21%
C 7591 6341 0 0 0.00% 0.00%
D 7590 6340 29 29 0.38% 0.46%

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 14 235 37408 199.83 925 910 182.6
A 13 254 10641 53.28 925 910 182.6
A 0 226 8103 39.38 925 910 182.6
B 3 64 111176 655.01 906 888 168.4
B 7 205 85800 504.3 906 888 168.4
B 0 219 41770 242.8 906 888 168.4
C 14 238 138908 697.65 858 867 197.9
C 4 224 7401 33.02 858 867 197.9
C 13 61 5995 25.92 858 867 197.9
D 1 52 623149 2965.9 877 859 209.8
D 2 250 185812 881.5 877 859 209.8
D 12 227 138266 654.89 877 859 209.8

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