ASTROSAT CZTI

Data Quality Report

Orbit 11554

Creation date: 2024-06-27T16:14:48.203423
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/AS1G08_009T01_9000001696_11554cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11554cztM0_level2_quad_clean.evt
Size (bytes)712,820,16095,189,760
Size679.8 MB 90.8 MB
Events in quadrant A5,246,892603,584
Events in quadrant B4,955,074610,252
Events in quadrant C3,274,286619,133
Events in quadrant D7,617,276539,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206044
B0196193
C0149743
D0276923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73043394.641292%
B73043865.284775%
C7304160.219058%
D7304128117.538335%

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 7670 7307 135 135 1.76% 1.85%
B 7670 7307 214 214 2.79% 2.93%
C 7670 7307 0 0 0.00% 0.00%
D 7670 7307 860 860 11.21% 11.77%

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 8 5 1568233 8865.36 858 841 176.8
A 1 162 105768 593.48 858 841 176.8
A 1 178 64455 359.81 858 841 176.8
B 4 239 912334 5533.39 857 835 164.7
B 15 204 346609 2099.07 857 835 164.7
B 11 51 190013 1148.43 857 835 164.7
C 13 61 6096 26.72 840 843 196.6
C 3 202 2023 6.0 840 843 196.6
C -1 -1 -1 -1.0 840 843 196.6
D 13 137 2462455 12920.36 784 761 190.5
D 1 52 1908631 10013.58 784 761 190.5
D 2 120 148608 775.98 784 761 190.5

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