ASTROSAT CZTI

Data Quality Report

Orbit 40679

Creation date: 2024-06-27T22:19:04.158288
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_029T02_9000005558_40679cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40679cztM0_level2_quad_clean.evt
Size (bytes)336,968,64087,240,960
Size321.4 MB 83.2 MB
Events in quadrant A2,858,480598,683
Events in quadrant B3,199,646607,326
Events in quadrant C3,324,482585,434
Events in quadrant D2,687,567487,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115113
B0129162
C0131972
D0115962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172130.251353%
B51721733.344934%
C5172480.928074%
D517253510.344161%

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 7295 5173 7 7 0.10% 0.14%
B 7295 5173 120 120 1.64% 2.32%
C 7295 5173 49 49 0.67% 0.95%
D 7295 5173 45 45 0.62% 0.87%

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 502382 4206.96 582 570 119.3
A 13 248 32828 270.44 582 570 119.3
A 12 189 27640 226.94 582 570 119.3
B 0 229 496222 4436.7 573 558 111.7
B 5 255 133912 1193.66 573 558 111.7
B 0 190 131354 1170.76 573 558 111.7
C 9 187 758413 5891.99 560 564 128.6
C 15 214 227251 1762.4 560 564 128.6
C 14 254 99069 765.84 560 564 128.6
D 12 191 157075 1194.09 530 514 131.1
D 13 171 118284 898.23 530 514 131.1
D 2 153 93312 707.77 530 514 131.1

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