ASTROSAT CZTI

Data Quality Report

Orbit 27015

Creation date: 2024-06-27T19:35:36.200749
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/AS1A09_145T01_9000003900_27015cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27015cztM0_level2_quad_clean.evt
Size (bytes)575,634,24099,987,840
Size549.0 MB 95.4 MB
Events in quadrant A5,472,672617,643
Events in quadrant B3,853,904663,574
Events in quadrant C3,414,728643,924
Events in quadrant D4,224,258622,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207240
B0157470
C0143000
D0171470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A688993313.543330%
B68903384.905660%
C68902373.439768%
D68893925.690231%

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 6989 6889 684 684 9.79% 9.93%
B 6990 6890 76 76 1.09% 1.10%
C 6990 6890 0 0 0.00% 0.00%
D 6989 6889 230 230 3.29% 3.34%

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 6 16 1710386 9987.81 835 820 171.2
A 14 235 540087 3150.56 835 820 171.2
A 13 254 9573 51.14 835 820 171.2
B 10 245 334336 1980.78 859 835 168.4
B 0 189 97316 573.03 859 835 168.4
B 10 246 30335 175.21 859 835 168.4
C 14 238 134552 676.04 834 840 197.8
C 5 218 12222 57.55 834 840 197.8
C 3 233 6439 28.31 834 840 197.8
D 1 52 726035 3632.54 833 812 199.6
D 12 233 198380 989.59 833 812 199.6
D 2 250 103095 512.32 833 812 199.6

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