ASTROSAT CZTI

Data Quality Report

Orbit 26523

Creation date: 2024-06-27T19:30:02.599493
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/AS1C05_019T04_9000003838_26523cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26523cztM0_level2_quad_clean.evt
Size (bytes)724,484,160117,823,680
Size690.9 MB 112.4 MB
Events in quadrant A3,555,968798,114
Events in quadrant B3,759,066812,831
Events in quadrant C5,142,588769,592
Events in quadrant D8,958,582647,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159010
B0163360
C0203790
D0319360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7747600.774493%
B77471001.290822%
C77473925.060023%
D7747182423.544598%

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 8093 7749 9 9 0.11% 0.12%
B 8093 7749 8 8 0.10% 0.10%
C 8093 7749 122 122 1.51% 1.57%
D 8093 7747 1513 1513 18.70% 19.53%

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 0 13 52862 286.3 907 887 181.5
A 13 254 12731 65.24 907 887 181.5
A 3 137 8286 40.76 907 887 181.5
B 5 172 84152 483.6 911 886 172.2
B 3 112 31593 178.34 911 886 172.2
B 0 244 28379 159.68 911 886 172.2
C 4 254 827880 4034.57 873 876 205.0
C 3 233 753767 3673.0 873 876 205.0
C 14 238 138745 672.6 873 876 205.0
D 1 52 3376495 17754.82 777 757 190.1
D 7 80 2287365 12026.5 777 757 190.1
D 12 233 225116 1180.02 777 757 190.1

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