ASTROSAT CZTI

Data Quality Report

Orbit 26996

Creation date: 2024-06-27T19:35:23.849849
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_145T01_9000003900_26996cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26996cztM0_level2_quad_clean.evt
Size (bytes)598,296,960115,269,120
Size570.6 MB 109.9 MB
Events in quadrant A4,342,352780,301
Events in quadrant B3,180,026826,287
Events in quadrant C3,193,732782,322
Events in quadrant D7,003,872689,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168010
B0130260
C0130470
D0248340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59002684.542373%
B5901300.508388%
C5900701.186441%
D5900108818.440678%

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 7295 5901 234 234 3.21% 3.97%
B 7296 5902 1 1 0.01% 0.02%
C 7295 5901 2 2 0.03% 0.03%
D 7295 5901 1056 1056 14.48% 17.90%

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 919398 5826.93 781 770 157.7
A 6 16 397981 2519.54 781 770 157.7
A 8 192 13812 82.73 781 770 157.7
B 12 111 17106 107.73 806 791 151.4
B 3 112 16773 105.53 806 791 151.4
B 11 111 15259 95.53 806 791 151.4
C 14 238 127072 693.74 777 788 182.0
C 15 208 29187 156.01 777 788 182.0
C 5 218 7212 35.29 777 788 182.0
D 1 52 2562923 15121.11 707 690 169.4
D 5 222 1224406 7221.81 707 690 169.4
D 12 233 178900 1051.71 707 690 169.4

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