ASTROSAT CZTI

Data Quality Report

Orbit 16846

Creation date: 2024-06-27T17:28:32.994544
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/AS1A05_056T01_9000002498_16846cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16846cztM0_level2_quad_clean.evt
Size (bytes)493,686,72081,357,120
Size470.8 MB 77.6 MB
Events in quadrant A3,232,336512,403
Events in quadrant B3,432,264528,202
Events in quadrant C3,776,444497,482
Events in quadrant D4,081,436484,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135523
B0140262
C0153442
D0162572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321761.202341%
B6321921.455466%
C63211562.467964%
D63211752.768549%

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 7497 6323 1 1 0.01% 0.02%
B 7497 6323 1 1 0.01% 0.02%
C 7497 6323 2 2 0.03% 0.03%
D 7497 6323 95 95 1.27% 1.50%

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 9 143 18037 103.57 834 819 166.2
A 13 228 8472 46.03 834 819 166.2
A 0 226 7241 38.63 834 819 166.2
B 3 64 89488 567.18 836 816 156.3
B 0 229 49276 309.97 836 816 156.3
B 10 16 25820 159.93 836 816 156.3
C 3 233 389686 2038.76 816 826 190.7
C 14 238 124762 649.79 816 826 190.7
C 0 207 69260 358.79 816 826 190.7
D 1 52 788735 3980.99 818 797 197.9
D 5 222 151853 763.2 818 797 197.9
D 2 234 22602 110.17 818 797 197.9

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