ASTROSAT CZTI

Data Quality Report

Orbit 26715

Creation date: 2024-06-27T19:32:02.190657
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/AS1A09_145T01_9000003848_26715cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26715cztM0_level2_quad_clean.evt
Size (bytes)1,084,849,920188,542,080
Size1.0 GB 179.8 MB
Events in quadrant A7,274,5821,229,164
Events in quadrant B7,295,1941,235,430
Events in quadrant C6,329,6401,204,470
Events in quadrant D11,092,5551,158,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296000
B0296520
C0265890
D0418100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127633592.812818%
B127644733.705735%
C127642031.590411%
D127649807.677844%

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 14638 12766 162 162 1.11% 1.27%
B 14639 12767 196 196 1.34% 1.54%
C 14639 12767 4 4 0.03% 0.03%
D 14639 12767 535 535 3.65% 4.19%

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 0 13 1130801 3506.65 1586 1559 322.0
A 12 96 23459 68.01 1586 1559 322.0
A 13 254 22057 63.65 1586 1559 322.0
B 0 189 728452 2437.42 1575 1538 298.2
B 10 246 293598 979.31 1575 1538 298.2
B 12 111 36041 115.69 1575 1538 298.2
C 14 238 244461 671.5 1532 1546 361.7
C 15 208 44795 119.56 1532 1546 361.7
C 2 16 38087 101.01 1532 1546 361.7
D 1 52 4154384 10737.7 1502 1466 386.8
D 2 250 514235 1325.81 1502 1466 386.8
D 7 80 355504 915.39 1502 1466 386.8

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