ASTROSAT CZTI

Data Quality Report

Orbit 40768

Creation date: 2024-06-27T22:20:14.176976
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/AS1C07_001T10_9000005566_40768cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40768cztM0_level2_quad_clean.evt
Size (bytes)329,117,76081,912,960
Size313.9 MB 78.1 MB
Events in quadrant A2,667,926566,150
Events in quadrant B3,142,249573,903
Events in quadrant C2,513,985562,100
Events in quadrant D3,452,267413,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109192
B0128481
C0108371
D0139761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520140.076908%
B52012094.018458%
C5201210.403769%
D5201113621.841953%

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 6904 5202 2 2 0.03% 0.04%
B 6904 5202 166 166 2.40% 3.19%
C 6904 5202 18 18 0.26% 0.35%
D 6904 5202 161 161 2.33% 3.09%

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 454842 3930.64 559 547 115.6
A 13 248 46192 394.93 559 547 115.6
A 13 254 7564 60.71 559 547 115.6
B 5 255 657596 6152.35 551 536 106.8
B 0 190 130916 1220.81 551 536 106.8
B 15 85 72857 677.17 551 536 106.8
C 15 214 221593 1750.35 545 548 126.3
C 14 254 67657 531.41 545 548 126.3
C 9 187 45471 355.72 545 548 126.3
D 12 227 640481 5411.72 477 464 118.3
D 12 191 208342 1757.73 477 464 118.3
D 2 249 190545 1607.25 477 464 118.3

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