ASTROSAT CZTI

Data Quality Report

Orbit 12235

Creation date: 2024-06-27T16:24:14.393050
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/AS1C03_014T03_9000001808_12235cztM0_level2.evt modeM0/AS1C03_014T03_9000001808_12235cztM0_level2_quad_clean.evt
Size (bytes)617,857,920129,836,160
Size589.2 MB 123.8 MB
Events in quadrant A6,146,137857,738
Events in quadrant B4,792,341849,449
Events in quadrant C3,544,409873,002
Events in quadrant D3,733,591842,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232612
B0191491
C0158641
D0164421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73105868.016416%
B73106238.522572%
C7310660.902873%
D73101111.518468%

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 7481 7312 216 216 2.89% 2.95%
B 7480 7311 357 357 4.77% 4.88%
C 7481 7312 25 25 0.33% 0.34%
D 7481 7312 82 82 1.10% 1.12%

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 13 251 2522803 15175.75 817 799 166.2
A 1 162 126968 759.2 817 799 166.2
A 8 15 70621 420.14 817 799 166.2
B 4 239 1166846 7667.15 804 786 152.1
B 3 64 200500 1313.17 804 786 152.1
B 10 246 59713 387.46 804 786 152.1
C 15 208 353658 1905.97 801 804 185.1
C 4 175 41646 220.61 801 804 185.1
C 0 207 10386 51.76 801 804 185.1
D 13 104 112491 579.05 799 774 192.9
D 10 199 108709 559.45 799 774 192.9
D 13 249 89362 459.17 799 774 192.9

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