ASTROSAT CZTI

Data Quality Report

Orbit 41084

Creation date: 2024-06-27T22:24:14.859915
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_9000005596_41084cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41084cztM0_level2_quad_clean.evt
Size (bytes)376,629,12089,631,360
Size359.2 MB 85.5 MB
Events in quadrant A3,132,769628,029
Events in quadrant B4,375,171593,509
Events in quadrant C2,609,335598,855
Events in quadrant D3,427,469535,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126293
B0163742
C0107542
D0135262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5100220.431373%
B51004759.313725%
C5100500.980392%
D51002995.862745%

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 7252 5101 8 8 0.11% 0.16%
B 7252 5101 368 368 5.07% 7.21%
C 7252 5101 42 42 0.58% 0.82%
D 7252 5101 239 239 3.30% 4.69%

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 558909 4592.73 594 584 121.6
A 12 189 168337 1379.92 594 584 121.6
A 2 79 51387 417.9 594 584 121.6
B 0 186 1832035 16792.73 571 557 109.1
B 0 190 177743 1624.61 571 557 109.1
B 5 255 70132 637.93 571 557 109.1
C 15 214 217231 1604.97 574 577 135.0
C 0 10 148509 1095.88 574 577 135.0
C 14 254 5175 34.06 574 577 135.0
D 2 249 482143 3427.0 569 554 140.5
D 12 233 303337 2154.61 569 554 140.5
D 13 171 132069 935.86 569 554 140.5

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