ASTROSAT CZTI

Data Quality Report

Orbit 22637

Creation date: 2024-06-27T18:43:52.479301
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/AS1A07_112T01_9000003360_22637cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22637cztM0_level2_quad_clean.evt
Size (bytes)504,259,20082,713,600
Size480.9 MB 78.9 MB
Events in quadrant A3,242,621540,914
Events in quadrant B3,263,453551,861
Events in quadrant C3,297,296528,779
Events in quadrant D5,058,604461,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132671
B0132991
C0134211
D0189771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6038971.606492%
B6038951.573369%
C60391322.185792%
D603963310.481868%

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 7293 6039 0 0 0.00% 0.00%
B 7293 6039 1 1 0.01% 0.02%
C 7294 6040 1 1 0.01% 0.02%
D 7294 6040 447 447 6.13% 7.40%

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 11 47 9530 53.11 839 825 163.9
A 13 254 9473 52.76 839 825 163.9
A 0 226 7477 40.58 839 825 163.9
B 12 111 17660 110.86 825 808 152.0
B 11 111 15917 99.39 825 808 152.0
B 14 111 13936 86.36 825 808 152.0
C 14 238 129742 695.94 805 814 185.3
C 0 10 17667 90.97 805 814 185.3
C 10 22 10216 50.75 805 814 185.3
D 7 238 1008288 5404.08 778 758 186.4
D 1 52 979231 5248.23 778 758 186.4
D 13 249 97856 520.8 778 758 186.4

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