ASTROSAT CZTI

Data Quality Report

Orbit 32841

Creation date: 2024-06-27T20:42:34.972453
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/AS1C06_002T09_9000004734_32841cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32841cztM0_level2_quad_clean.evt
Size (bytes)473,091,84087,572,160
Size451.2 MB 83.5 MB
Events in quadrant A2,518,961581,874
Events in quadrant B2,937,952581,729
Events in quadrant C2,757,598581,659
Events in quadrant D5,753,268535,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109203
B0121882
C0115862
D0209502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309120.226031%
B5309971.827086%
C5309350.659258%
D53093196.008665%

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 7073 5310 2 2 0.03% 0.04%
B 7073 5310 58 58 0.82% 1.09%
C 7073 5310 22 22 0.31% 0.41%
D 7073 5310 256 256 3.62% 4.82%

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 14 238 50174 398.81 623 611 124.3
A 9 143 16455 127.49 623 611 124.3
A 12 16 12795 98.04 623 611 124.3
B 5 172 269276 2298.71 623 608 116.9
B 0 219 81559 692.61 623 608 116.9
B 0 197 44693 377.19 623 608 116.9
C 3 233 152459 1073.45 613 618 141.5
C 0 10 70147 491.54 613 618 141.5
C 9 160 60402 422.65 613 618 141.5
D 8 195 1872385 12695.34 592 576 147.4
D 2 250 649049 4398.2 592 576 147.4
D 10 203 299300 2026.06 592 576 147.4

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