ASTROSAT CZTI

Data Quality Report

Orbit 28397

Creation date: 2024-06-27T19:51:19.753138
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/AS1A10_058T13_9000004088_28397cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28397cztM0_level2_quad_clean.evt
Size (bytes)529,660,80092,191,680
Size505.1 MB 87.9 MB
Events in quadrant A3,042,368617,308
Events in quadrant B3,183,502624,067
Events in quadrant C3,015,744585,762
Events in quadrant D6,380,307533,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130010
B0132920
C0128660
D0230870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6177270.437105%
B6178470.760764%
C6178590.955002%
D617884813.726125%

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 7342 6177 0 0 0.00% 0.00%
B 7343 6178 2 2 0.03% 0.03%
C 7343 6179 1 1 0.01% 0.02%
D 7343 6178 621 621 8.46% 10.05%

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 13 254 9694 56.57 784 770 157.7
A 3 137 7332 41.6 784 770 157.7
A 6 16 6911 38.93 784 770 157.7
B 10 245 57179 383.86 777 759 147.0
B 10 246 30691 203.65 777 759 147.0
B 0 230 25644 169.31 777 759 147.0
C 14 238 121218 691.37 741 746 174.3
C 7 220 6076 30.59 741 746 174.3
C 13 61 5120 25.1 741 746 174.3
D 1 52 2623439 15593.73 702 683 168.2
D 8 195 858122 5097.95 702 683 168.2
D 2 250 216840 1285.17 702 683 168.2

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