ASTROSAT CZTI

Data Quality Report

Orbit 34665

Creation date: 2022-02-25T08:13:48.204470
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/AS1A11_065T06_9000004958_34665cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34665cztM0_level2_quad_clean.evt
Size (bytes)82,393,92010,221,120
Size78.6 MB 9.7 MB
Events in quadrant A437,76863,172
Events in quadrant B923,21760,285
Events in quadrant C543,88659,360
Events in quadrant D529,08058,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018142
B033131
C020971
D020881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86110.116144%
B86117119.860627%
C861354.065041%
D86110.116144%

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 861 861 0 0 0.00% 0.00%
B 861 861 128 128 14.87% 14.87%
C 861 861 20 20 2.32% 2.32%
D 861 861 0 0 0.00% 0.00%

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 10 83 19203 819.29 106 105 23.3
A 13 6 4229 176.92 106 105 23.3
A 13 254 1480 58.99 106 105 23.3
B 5 172 493723 22973.12 100 98 21.5
B 5 255 26360 1222.22 100 98 21.5
B 0 189 3907 177.27 100 98 21.5
C 0 10 90418 3482.91 103 103 25.9
C 15 214 39950 1536.66 103 103 25.9
C 14 67 8747 333.35 103 103 25.9
D 8 195 122928 4499.25 102 99 27.3
D 2 250 7497 270.99 102 99 27.3
D 2 234 3569 127.11 102 99 27.3

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