ASTROSAT CZTI

Data Quality Report

Orbit 41721

Creation date: 2024-06-27T22:32:00.915940
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/AS1A12_077T12_9000005692_41721cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41721cztM0_level2_quad_clean.evt
Size (bytes)317,528,64087,341,760
Size302.8 MB 83.3 MB
Events in quadrant A2,782,893606,657
Events in quadrant B2,326,137617,129
Events in quadrant C2,615,470569,228
Events in quadrant D3,649,264510,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112511
B099711
C0105781
D0140612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4876130.266612%
B487660.123052%
C48771042.132458%
D48763457.075472%

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 7000 4877 10 10 0.14% 0.21%
B 7000 4877 1 1 0.01% 0.02%
C 7001 4878 100 100 1.43% 2.05%
D 7000 4877 319 319 4.56% 6.54%

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 444272 3724.25 578 567 119.1
A 2 79 49577 411.37 578 567 119.1
A 7 3 28490 234.37 578 567 119.1
B 5 255 39740 359.58 566 551 109.0
B 0 183 28478 256.24 566 551 109.0
B 15 35 28262 254.26 566 551 109.0
C 0 10 264244 2064.34 551 557 127.7
C 15 214 194153 1515.62 551 557 127.7
C 14 67 8303 60.64 551 557 127.7
D 13 249 716031 5408.05 543 529 132.3
D 2 249 553973 4183.15 543 529 132.3
D 12 79 124301 935.52 543 529 132.3

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