ASTROSAT CZTI

Data Quality Report

Orbit 22919

Creation date: 2024-06-27T18:47:31.889535
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/AS1A07_047T09_9000003386_22919cztM0_level2.evt modeM0/AS1A07_047T09_9000003386_22919cztM0_level2_quad_clean.evt
Size (bytes)331,473,60059,420,160
Size316.1 MB 56.7 MB
Events in quadrant A1,931,708390,155
Events in quadrant B2,041,866394,463
Events in quadrant C2,018,969371,449
Events in quadrant D3,767,953355,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083531
B086011
C084931
D0140471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4079260.637411%
B4079491.201275%
C4079751.838686%
D40794059.928904%

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 4484 4080 0 0 0.00% 0.00%
B 4484 4080 5 5 0.11% 0.12%
C 4484 4080 0 0 0.00% 0.00%
D 4484 4080 225 225 5.02% 5.51%

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 13 254 7332 67.25 498 487 101.8
A 0 23 6608 60.14 498 487 101.8
A 0 226 4606 40.47 498 487 101.8
B 0 190 34478 354.56 496 482 95.9
B 10 247 26440 270.73 496 482 95.9
B 0 228 16721 169.36 496 482 95.9
C 14 238 75338 664.56 478 479 112.6
C 6 80 68968 608.01 478 479 112.6
C 8 128 4871 38.99 478 479 112.6
D 1 52 1306007 11164.98 472 456 116.9
D 12 233 196324 1675.05 472 456 116.9
D 13 172 160094 1365.21 472 456 116.9

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