ASTROSAT CZTI

Data Quality Report

Orbit 27204

Creation date: 2024-06-27T19:37:41.774798
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/AS1T03_243T01_9000003918_27204cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27204cztM0_level2_quad_clean.evt
Size (bytes)704,191,68091,065,600
Size671.6 MB 86.8 MB
Events in quadrant A3,811,508577,650
Events in quadrant B5,555,473574,055
Events in quadrant C3,841,077560,398
Events in quadrant D7,584,556496,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164730
B0220400
C0164790
D0278650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78901211.533587%
B78903494.423321%
C78901802.281369%
D7890111314.106464%

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 8410 7892 2 2 0.02% 0.03%
B 8410 7892 76 76 0.90% 0.96%
C 8410 7892 1 1 0.01% 0.01%
D 8410 7892 856 856 10.18% 10.85%

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 13 254 12707 58.95 981 961 199.2
A 8 192 12388 57.35 981 961 199.2
A 3 137 9341 42.06 981 961 199.2
B 3 64 1689515 8934.69 970 943 189.0
B 12 111 23640 120.1 970 943 189.0
B 11 111 20672 104.39 970 943 189.0
C 14 238 146355 649.74 939 946 223.8
C 2 16 13952 58.12 939 946 223.8
C 15 208 13049 54.08 939 946 223.8
D 1 52 2874094 12855.15 870 849 223.5
D 2 250 407141 1817.79 870 849 223.5
D 7 38 362063 1616.1 870 849 223.5

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