ASTROSAT CZTI

Data Quality Report

Orbit 40899

Creation date: 2024-06-27T22:21:56.169302
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_097T01_9000005574_40899cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40899cztM0_level2_quad_clean.evt
Size (bytes)276,932,16072,080,640
Size264.1 MB 68.7 MB
Events in quadrant A2,333,808479,921
Events in quadrant B2,255,840500,159
Events in quadrant C2,265,069474,415
Events in quadrant D3,048,993415,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094511
B097281
C094841
D0120461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A445090.202247%
B4450340.764045%
C4450400.898876%
D44502275.101124%

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 6333 4451 0 0 0.00% 0.00%
B 6333 4451 18 18 0.28% 0.40%
C 6333 4451 28 28 0.44% 0.63%
D 6333 4451 179 179 2.83% 4.02%

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 375953 3651.42 493 482 102.8
A 12 189 34596 331.76 493 482 102.8
A 13 6 10139 93.91 493 482 102.8
B 4 171 111149 1143.15 491 477 96.8
B 5 32 85329 876.45 491 477 96.8
B 0 190 43331 442.65 491 477 96.8
C 15 214 184125 1611.02 479 482 114.0
C 14 254 147086 1286.1 479 482 114.0
C 0 10 48102 417.75 479 482 114.0
D 2 249 536908 4593.96 470 457 116.8
D 12 79 217380 1857.64 470 457 116.8
D 12 128 159090 1358.47 470 457 116.8

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