ASTROSAT CZTI

Data Quality Report

Orbit 27102

Creation date: 2024-06-27T19:36:32.036908
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/AS1T03_231T01_9000003910_27102cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27102cztM0_level2_quad_clean.evt
Size (bytes)655,355,52080,303,040
Size625.0 MB 76.6 MB
Events in quadrant A5,986,586468,353
Events in quadrant B3,894,754502,607
Events in quadrant C3,732,310482,720
Events in quadrant D5,721,861451,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226880
B0161680
C0158450
D0221660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A756576510.112360%
B75651902.511566%
C75651632.154660%
D75653144.150694%

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 7855 7566 415 415 5.28% 5.49%
B 7855 7566 3 3 0.04% 0.04%
C 7855 7566 2 2 0.03% 0.03%
D 7855 7566 219 219 2.79% 2.89%

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 14 235 2416335 13016.42 916 896 185.6
A 12 189 37410 196.77 916 896 185.6
A 13 254 11089 54.93 916 896 185.6
B 10 245 91509 488.11 942 915 185.6
B 3 112 44129 232.83 942 915 185.6
B 10 246 25410 131.98 942 915 185.6
C 14 238 142611 655.51 908 913 216.2
C 15 208 42326 191.58 908 913 216.2
C 2 16 13669 59.01 908 913 216.2
D 1 52 1036743 4396.51 893 873 235.6
D 13 172 734430 3113.41 893 873 235.6
D 7 38 293472 1241.87 893 873 235.6

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