ASTROSAT CZTI

Data Quality Report

Orbit 34174

Creation date: 2024-06-27T20:57:24.940241
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/AS1A11_047T15_9000004882_34174cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34174cztM0_level2_quad_clean.evt
Size (bytes)504,293,76075,412,800
Size480.9 MB 71.9 MB
Events in quadrant A2,591,386489,147
Events in quadrant B3,551,909486,115
Events in quadrant C4,685,695485,196
Events in quadrant D4,092,743459,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109623
B0139502
C0176142
D0156722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518290.173678%
B51822494.805095%
C51823556.850637%
D5182781.505210%

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 7067 5183 0 0 0.00% 0.00%
B 7067 5183 180 180 2.55% 3.47%
C 7067 5183 257 257 3.64% 4.96%
D 7067 5183 61 61 0.86% 1.18%

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 15 169 50142 381.23 648 637 129.9
A 10 83 22675 169.71 648 637 129.9
A 13 6 12650 92.51 648 637 129.9
B 0 245 407349 3354.14 636 621 121.3
B 5 172 239546 1970.33 636 621 121.3
B 0 197 95021 778.48 636 621 121.3
C 0 239 1299401 9106.67 614 620 142.6
C 0 10 756616 5300.82 614 620 142.6
C 15 214 217362 1519.73 614 620 142.6
D 8 195 1180191 7671.59 629 613 153.8
D 10 118 177002 1147.18 629 613 153.8
D 2 120 70564 454.94 629 613 153.8

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