ASTROSAT CZTI

Data Quality Report

Orbit 40791

Creation date: 2024-06-27T22:20:32.415097
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_095T02_9000005568_40791cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40791cztM0_level2_quad_clean.evt
Size (bytes)333,941,76086,662,080
Size318.5 MB 82.6 MB
Events in quadrant A2,785,184587,562
Events in quadrant B3,284,513591,387
Events in quadrant C2,615,815571,902
Events in quadrant D3,269,016507,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115563
B0132202
C0111262
D0136042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5219110.210768%
B52192114.042920%
C5219681.302932%
D52192865.479977%

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 7041 5220 7 7 0.10% 0.13%
B 7040 5218 155 155 2.20% 2.97%
C 7040 5218 67 67 0.95% 1.28%
D 7041 5220 261 261 3.71% 5.00%

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 502879 4326.17 570 559 116.1
A 12 189 23919 201.19 570 559 116.1
A 13 248 19297 161.38 570 559 116.1
B 12 18 726172 6743.42 562 547 107.6
B 5 255 127999 1184.44 562 547 107.6
B 7 202 78655 725.88 562 547 107.6
C 15 214 222044 1683.26 560 562 131.6
C 0 10 190302 1442.02 560 562 131.6
C 14 254 15909 116.64 560 562 131.6
D 2 153 374535 2833.81 541 525 132.0
D 2 249 363128 2747.38 541 525 132.0
D 12 233 228488 1727.24 541 525 132.0

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