ASTROSAT CZTI

Data Quality Report

Orbit 32659

Creation date: 2024-06-27T20:40:34.516531
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/AS1A10_057T03_9000004722_32659cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32659cztM0_level2_quad_clean.evt
Size (bytes)686,580,48053,614,080
Size654.8 MB 51.1 MB
Events in quadrant A2,710,998328,348
Events in quadrant B6,962,894313,244
Events in quadrant C4,059,633310,681
Events in quadrant D6,702,705299,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112753
B0244112
C0154982
D0235832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5292280.529101%
B5292125523.715042%
C52922895.461073%
D5292114521.636432%

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 7085 5293 18 18 0.25% 0.34%
B 7085 5293 1095 1095 15.46% 20.69%
C 7085 5293 226 226 3.19% 4.27%
D 7085 5293 1114 1114 15.72% 21.05%

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 15 249 102429 804.02 630 618 126.6
A 14 239 99273 779.1 630 618 126.6
A 0 135 15675 118.91 630 618 126.6
B 3 43 1551427 13940.28 592 581 111.2
B 0 219 1153607 10364.34 592 581 111.2
B 12 1 483809 4343.65 592 581 111.2
C 8 35 556210 3995.71 594 598 139.1
C 9 160 327823 2353.26 594 598 139.1
C 8 50 233613 1675.74 594 598 139.1
D 12 33 710360 5431.73 549 538 130.7
D 2 249 631684 4829.68 549 538 130.7
D 2 250 614151 4695.51 549 538 130.7

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