ASTROSAT CZTI

Data Quality Report

Orbit 40907

Creation date: 2024-06-27T22:22:02.379220
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_102T01_9000005576_40907cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40907cztM0_level2_quad_clean.evt
Size (bytes)344,594,88092,730,240
Size328.6 MB 88.4 MB
Events in quadrant A2,949,066628,193
Events in quadrant B2,969,814638,533
Events in quadrant C2,959,539604,088
Events in quadrant D3,450,624553,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122073
B0126962
C0122482
D0141562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5482180.328347%
B5482801.459321%
C5482591.076250%
D54821031.878876%

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 7305 5483 4 4 0.05% 0.07%
B 7305 5483 38 38 0.52% 0.69%
C 7305 5483 52 52 0.71% 0.95%
D 7304 5482 85 85 1.16% 1.55%

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 558639 4386.86 612 600 127.2
A 13 254 9513 70.07 612 600 127.2
A 13 6 7490 54.16 612 600 127.2
B 4 171 382897 3248.47 607 591 117.7
B 5 255 63569 535.13 607 591 117.7
B 0 190 49346 414.27 607 591 117.7
C 14 254 325228 2343.91 597 598 138.5
C 15 214 231276 1665.55 597 598 138.5
C 0 10 64803 463.58 597 598 138.5
D 12 79 397397 2738.17 593 577 144.9
D 12 233 206228 1419.05 593 577 144.9
D 12 128 134327 922.91 593 577 144.9

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