ASTROSAT CZTI

Data Quality Report

Orbit 08437

Creation date: 2024-06-27T15:30:06.071561
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/AS1C02_028T01_9000001146_08437cztM0_level2.evt modeM0/AS1C02_028T01_9000001146_08437cztM0_level2_quad_clean.evt
Size (bytes)57,392,6407,750,080
Size54.7 MB 7.4 MB
Events in quadrant A403,95639,058
Events in quadrant B451,79151,266
Events in quadrant C393,07241,947
Events in quadrant D428,29135,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02733597094080
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02485732
B02671792
C02543785
D028421069

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87520.228571%
B90310.110742%
C87900.000000%
D77440.516796%

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 1637 1251 0 0 0.00% 0.00%
B 1640 1267 0 0 0.00% 0.00%
C 1639 1227 0 0 0.00% 0.00%
D 1638 1137 0 0 0.00% 0.00%

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 12 194 1037 40.24 104 102 23.2
A 0 226 1017 39.38 104 102 23.2
A 15 236 876 33.31 104 102 23.2
B 0 214 33080 1497.22 105 103 22.0
B 11 51 6304 281.54 105 103 22.0
B 12 111 1874 80.41 105 103 22.0
C 13 61 733 25.54 100 100 24.8
C 12 4 618 20.89 100 100 24.8
C 3 202 270 6.84 100 100 24.8
D 6 225 52030 2199.8 89 86 23.6
D 7 71 25838 1090.58 89 86 23.6
D 12 233 9513 399.23 89 86 23.6

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