ASTROSAT CZTI

Data Quality Report

Orbit 25460

Creation date: 2024-06-27T19:17:54.230871
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_085T02_9000003716_25460cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25460cztM0_level2_quad_clean.evt
Size (bytes)507,087,360100,045,440
Size483.6 MB 95.4 MB
Events in quadrant A3,772,223660,601
Events in quadrant B3,430,496666,757
Events in quadrant C3,485,854642,542
Events in quadrant D4,247,456626,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150900
B0141280
C0144300
D0166980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215550.884956%
B6215530.852776%
C62141161.866752%
D62141993.202446%

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 7555 6216 5 5 0.07% 0.08%
B 7555 6216 0 0 0.00% 0.00%
C 7554 6215 0 0 0.00% 0.00%
D 7554 6215 161 161 2.13% 2.59%

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 6 16 330965 1882.9 892 880 175.3
A 13 254 10251 53.45 892 880 175.3
A 0 226 7632 38.52 892 880 175.3
B 12 111 18832 111.82 874 857 160.7
B 11 111 17344 102.57 874 857 160.7
B 14 111 15964 93.98 874 857 160.7
C 14 238 140781 717.05 856 867 195.1
C 13 61 5832 25.45 856 867 195.1
C 9 54 4395 18.08 856 867 195.1
D 1 52 620217 3018.92 862 839 205.2
D 7 238 151261 733.17 862 839 205.2
D 8 195 120121 581.39 862 839 205.2

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