ASTROSAT CZTI

Data Quality Report

Orbit 51370

Creation date: 2025-03-29T10:10:16.575312
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_001T03_9000006456_51370cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51370cztM0_level2_quad_clean.evt
Size (bytes)595,224,00039,003,840
Size567.6 MB 37.2 MB
Events in quadrant A3,952,203287,303
Events in quadrant B2,668,437312,175
Events in quadrant C8,090,45423,261
Events in quadrant D6,949,809220,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0960
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150840
B0113800
C0273310
D0239650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139733429127208139732466008110
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47852374.952978%
B48051092.268470%
C4740473999.978903%
D4754150931.741691%

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 6250 4840 200 200 3.20% 4.13%
B 6250 4855 70 70 1.12% 1.44%
C 6249 4739 474 474 7.59% 10.00%
D 6250 4809 1356 1356 21.70% 28.20%

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 12 3 890724 7570.58 477 465 117.6
A 15 174 656501 5578.8 477 465 117.6
A 12 250 146689 1243.46 477 465 117.6
B 5 185 411049 3917.93 486 471 104.8
B 3 214 94954 901.6 486 471 104.8
B 4 206 81142 769.8 486 471 104.8
C 15 179 4841188 271458.7 58 57 17.8
C 4 12 2342609 131354.87 58 57 17.8
C 0 177 632474 35461.77 58 57 17.8
D 11 176 2675416 23484.56 407 393 113.9
D 7 60 1777676 15603.12 407 393 113.9
D 7 126 450014 3947.31 407 393 113.9

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