ASTROSAT CZTI

Data Quality Report

Orbit 10655

Creation date: 2024-06-27T16:02:04.579982
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/AS1T01_191T01_9000001536_10655cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10655cztM0_level2_quad_clean.evt
Size (bytes)521,461,44084,245,760
Size497.3 MB 80.3 MB
Events in quadrant A3,992,472527,854
Events in quadrant B4,272,004525,339
Events in quadrant C3,071,419538,499
Events in quadrant D4,013,796504,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161043
B0169492
C0135312
D0162812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65282043.125000%
B65282994.580270%
C6528190.291054%
D6528981.501225%

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 7528 6528 121 121 1.61% 1.85%
B 7528 6529 166 166 2.21% 2.54%
C 7528 6529 4 4 0.05% 0.06%
D 7528 6529 76 76 1.01% 1.16%

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 15 239 734424 4590.92 777 763 159.8
A 15 223 139285 866.81 777 763 159.8
A 1 162 37237 228.24 777 763 159.8
B 4 239 1164321 7857.42 776 758 148.1
B 0 214 54741 364.54 776 758 148.1
B 12 111 15252 97.88 776 758 148.1
C 4 254 96927 550.61 759 768 174.6
C 4 175 10008 52.91 759 768 174.6
C 13 61 5703 28.26 759 768 174.6
D 14 34 438538 2397.56 748 729 182.6
D 1 20 399014 2181.11 748 729 182.6
D 8 195 136144 741.57 748 729 182.6

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