ASTROSAT CZTI

Data Quality Report

Orbit 09841

Creation date: 2024-06-27T15:51:15.634676
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/AS1G07_020T01_9000001398_09841cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09841cztM0_level2_quad_clean.evt
Size (bytes)59,765,76018,627,840
Size57.0 MB 17.8 MB
Events in quadrant A446,862123,031
Events in quadrant B461,347124,417
Events in quadrant C418,166128,469
Events in quadrant D419,652118,143

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033201439
B036841777
C030801264
D031981367

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B0308
C03014
D03010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B041
C040
D052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A875131.485714%
B85650.584112%
C89810.111359%
D88810.112613%

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 1499 1080 5 5 0.33% 0.46%
B 1496 1059 0 0 0.00% 0.00%
C 1509 1107 0 0 0.00% 0.00%
D 1503 1081 2 2 0.13% 0.19%

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 4 2 37237 1590.8 105 104 23.3
A 0 226 1039 40.06 105 104 23.3
A 14 111 944 35.99 105 104 23.3
B 4 81 22210 995.88 105 103 22.2
B 4 239 8188 364.22 105 103 22.2
B 4 173 6477 287.14 105 103 22.2
C 12 4 3408 127.35 105 106 25.9
C 4 254 944 32.32 105 106 25.9
C 13 61 803 26.88 105 106 25.9
D 10 253 8977 332.75 101 98 26.7
D 1 52 5649 208.03 101 98 26.7
D 2 234 5047 185.47 101 98 26.7

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