ASTROSAT CZTI

Data Quality Report

Orbit 25667

Creation date: 2024-06-27T19:20:11.959754
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_016T03_9000003740_25667cztM0_level2.evt modeM0/AS1A09_016T03_9000003740_25667cztM0_level2_quad_clean.evt
Size (bytes)544,752,00084,948,480
Size519.5 MB 81.0 MB
Events in quadrant A4,007,771523,526
Events in quadrant B3,888,321531,209
Events in quadrant C3,803,202500,750
Events in quadrant D4,284,469489,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162070
B0159950
C0158440
D0174890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75671471.942646%
B75671862.458041%
C75681552.048097%
D7568931.228858%

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 9112 7568 0 0 0.00% 0.00%
B 9112 7568 1 1 0.01% 0.01%
C 9113 7570 0 0 0.00% 0.00%
D 9113 7570 4 4 0.04% 0.05%

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 8 192 177551 890.65 978 957 198.3
A 4 2 33179 162.51 978 957 198.3
A 12 96 16869 80.25 978 957 198.3
B 0 245 43504 225.16 975 949 189.0
B 12 111 23828 121.05 975 949 189.0
B 11 111 21499 108.73 975 949 189.0
C 14 238 149239 670.25 933 938 221.3
C 3 233 17876 76.55 933 938 221.3
C 13 61 6297 24.22 933 938 221.3
D 8 195 613791 2664.8 940 913 230.0
D 1 52 77077 331.16 940 913 230.0
D 13 104 33772 142.87 940 913 230.0

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