ASTROSAT CZTI

Data Quality Report

Orbit 48437

Creation date: 2024-09-11T23:10:23.164477
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/AS1A13_029T01_9000006426_48437cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48437cztM0_level2_quad_clean.evt
Size (bytes)595,091,520129,087,360
Size567.5 MB 123.1 MB
Events in quadrant A8,686,273835,771
Events in quadrant B4,760,498854,270
Events in quadrant C3,801,211860,394
Events in quadrant D4,139,389783,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318840
B0199630
C0176780
D0185470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82685056.107886%
B82694675.647599%
C8268961.161103%
D82681641.983551%

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 8268 8268 50 50 0.60% 0.60%
B 8269 8269 63 63 0.76% 0.76%
C 8268 8268 3 3 0.04% 0.04%
D 8268 8268 39 39 0.47% 0.47%

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 4734229 23321.29 957 934 203.0
A 13 248 236150 1158.93 957 934 203.0
A 13 254 15079 69.69 957 934 203.0
B 12 16 774435 4020.06 948 917 192.4
B 8 234 175007 904.76 948 917 192.4
B 5 171 40157 203.93 948 917 192.4
C 15 208 48626 207.79 952 957 229.4
C 14 254 30577 129.11 952 957 229.4
C 13 61 6484 24.09 952 957 229.4
D 5 32 142336 581.73 954 925 243.1
D 12 233 141840 579.69 954 925 243.1
D 2 249 74427 302.37 954 925 243.1

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