ASTROSAT CZTI

Data Quality Report

Orbit 08555

Creation date: 2024-06-27T15:34:12.801882
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_060T01_9000001200_08555cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08555cztM0_level2_quad_clean.evt
Size (bytes)558,849,60081,420,480
Size533.0 MB 77.6 MB
Events in quadrant A3,096,499533,471
Events in quadrant B3,278,217544,272
Events in quadrant C3,003,306530,638
Events in quadrant D7,102,779400,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136996
B0140352
C0135142
D0258282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6540210.321101%
B6541570.871426%
C6541160.244611%
D6541183928.114967%

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 9086 6543 3 3 0.03% 0.05%
B 9086 6543 14 14 0.15% 0.21%
C 9086 6543 0 0 0.00% 0.00%
D 9085 6541 1615 1615 17.78% 24.69%

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 15 223 38605 235.85 790 776 160.4
A 15 239 12983 76.11 790 776 160.4
A 0 226 7368 41.1 790 776 160.4
B 4 81 84008 556.88 795 777 149.5
B 10 16 37548 246.02 795 777 149.5
B 10 252 31669 206.69 795 777 149.5
C 14 234 7342 36.92 767 772 177.9
C 13 61 5729 27.86 767 772 177.9
C 8 222 3681 16.35 767 772 177.9
D 4 95 4614027 30093.3 625 608 153.3
D 12 233 47529 306.07 625 608 153.3
D 1 52 33841 216.78 625 608 153.3

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