ASTROSAT CZTI

Data Quality Report

Orbit 34161

Creation date: 2024-06-27T20:57:15.637729
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_054T07_9000004878_34161cztM0_level2.evt modeM0/AS1A11_054T07_9000004878_34161cztM0_level2_quad_clean.evt
Size (bytes)414,132,48091,765,440
Size394.9 MB 87.5 MB
Events in quadrant A2,376,037613,445
Events in quadrant B2,842,144636,449
Events in quadrant C3,044,688613,362
Events in quadrant D3,945,700571,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100733
B0114652
C0120152
D0150822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491240.081433%
B4912681.384365%
C49121232.504072%
D49121072.178339%

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 6973 4913 2 2 0.03% 0.04%
B 6973 4913 55 55 0.79% 1.12%
C 6973 4913 94 94 1.35% 1.91%
D 6973 4912 67 67 0.96% 1.36%

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 10 83 20295 161.79 604 593 121.8
A 13 6 11661 90.89 604 593 121.8
A 15 169 11461 89.24 604 593 121.8
B 5 172 110971 962.48 608 593 114.7
B 0 229 102263 886.55 608 593 114.7
B 5 255 82663 715.64 608 593 114.7
C 0 10 390716 2876.64 588 595 135.6
C 15 214 209539 1540.7 588 595 135.6
C 0 239 130837 960.37 588 595 135.6
D 8 195 1221512 8652.63 576 559 141.1
D 13 249 162614 1148.45 576 559 141.1
D 1 52 130553 921.24 576 559 141.1

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