ASTROSAT CZTI

Data Quality Report

Orbit 36721

Creation date: 2024-06-27T21:30:45.414893
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_101T01_9000005238_36721cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36721cztM0_level2_quad_clean.evt
Size (bytes)418,276,80084,801,600
Size398.9 MB 80.9 MB
Events in quadrant A2,593,598556,876
Events in quadrant B2,840,706567,279
Events in quadrant C3,623,234543,340
Events in quadrant D3,245,724525,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113403
B0118512
C0142202
D0133492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5355150.280112%
B5355551.027077%
C53553386.311858%
D53551172.184874%

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 7088 5356 7 7 0.10% 0.13%
B 7088 5356 28 28 0.40% 0.52%
C 7088 5356 246 246 3.47% 4.59%
D 7088 5356 107 107 1.51% 2.00%

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 10 83 214531 1722.69 607 595 124.2
A 9 143 21509 168.41 607 595 124.2
A 13 6 9667 73.05 607 595 124.2
B 0 221 108015 921.76 608 593 116.5
B 0 189 99717 850.55 608 593 116.5
B 5 255 67834 576.98 608 593 116.5
C 14 254 651332 4794.38 580 584 135.7
C 0 10 425805 3132.81 580 584 135.7
C 15 214 235982 1734.29 580 584 135.7
D 12 233 206913 1434.38 588 572 143.9
D 13 171 146547 1014.75 588 572 143.9
D 12 6 142838 988.96 588 572 143.9

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