ASTROSAT CZTI

Data Quality Report

Orbit 18858

Creation date: 2024-06-27T17:55:43.914664
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/AS1T03_094T01_9000002816_18858cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18858cztM0_level2_quad_clean.evt
Size (bytes)509,636,16098,755,200
Size486.0 MB 94.2 MB
Events in quadrant A3,177,643656,642
Events in quadrant B3,556,171680,868
Events in quadrant C3,273,160637,105
Events in quadrant D4,988,110564,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134132
B0147112
C0137362
D0191352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465190.293890%
B64651081.670534%
C6465590.912606%
D64656149.497293%

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 7715 6466 0 0 0.00% 0.00%
B 7715 6466 41 41 0.53% 0.63%
C 7715 6466 9 9 0.12% 0.14%
D 7715 6466 464 464 6.01% 7.18%

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 11 29 11520 65.18 822 806 164.4
A 13 254 10644 59.85 822 806 164.4
A 0 226 7295 39.48 822 806 164.4
B 7 220 299654 1936.09 822 803 154.4
B 12 111 17804 110.14 822 803 154.4
B 11 111 14980 91.84 822 803 154.4
C 14 238 124480 679.36 785 792 182.1
C 5 112 55550 300.76 785 792 182.1
C 0 207 24767 131.68 785 792 182.1
D 7 238 1541327 8444.8 750 729 182.4
D 7 38 238918 1305.64 750 729 182.4
D 1 52 227270 1241.79 750 729 182.4

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