ASTROSAT CZTI

Data Quality Report

Orbit 36597

Creation date: 2024-06-27T21:28:56.850980
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/AS1A11_097T24_9000005224_36597cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36597cztM0_level2_quad_clean.evt
Size (bytes)423,789,12060,505,920
Size404.2 MB 57.7 MB
Events in quadrant A2,789,888378,483
Events in quadrant B2,668,934378,510
Events in quadrant C3,544,624358,508
Events in quadrant D3,472,650347,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114633
B0111522
C0135682
D0138142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5277320.606405%
B5277260.492704%
C52773366.367254%
D52771462.766724%

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 7070 5278 21 21 0.30% 0.40%
B 7070 5278 7 7 0.10% 0.13%
C 7070 5278 263 263 3.72% 4.98%
D 7070 5278 117 117 1.65% 2.22%

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 196194 1552.0 629 618 126.0
A 15 223 136559 1078.76 629 618 126.0
A 9 143 18602 142.71 629 618 126.0
B 4 232 60746 504.26 621 605 119.3
B 15 85 53852 446.46 621 605 119.3
B 5 255 36124 297.81 621 605 119.3
C 0 207 501087 3670.15 585 590 136.4
C 0 10 494205 3619.68 585 590 136.4
C 15 214 221205 1617.77 585 590 136.4
D 13 171 287299 1940.91 602 586 147.7
D 10 199 213885 1443.93 602 586 147.7
D 13 249 199104 1343.87 602 586 147.7

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