ASTROSAT CZTI

Data Quality Report

Orbit 49750

Creation date: 2024-12-09T12:16:38.946000
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/AS1A13_037T01_9000006440_49750cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49750cztM0_level2_quad_clean.evt
Size (bytes)1,236,585,60044,303,040
Size1.2 GB 42.3 MB
Events in quadrant A14,828,402103,486
Events in quadrant B4,757,273631,688
Events in quadrant C11,066,0053,326
Events in quadrant D14,639,103164,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482731
B0184121
C0372551
D0477681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6270550987.862839%
B62702263.604466%
C6270624799.633174%
D6270476876.044657%

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 7300 6270 5468 5468 74.90% 87.21%
B 7300 6270 129 129 1.77% 2.06%
C 7299 6269 1852 1852 25.37% 29.54%
D 7299 6269 4742 4742 64.97% 75.64%

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 7103044 52345.05 484 470 135.7
A 12 50 1093080 8052.39 484 470 135.7
A 3 84 653640 4813.78 484 470 135.7
B 1 207 641815 4519.08 667 646 141.9
B 10 128 477537 3361.22 667 646 141.9
B 4 206 349375 2457.91 667 646 141.9
C 15 180 3840071 96322.01 87 84 39.9
C 15 181 1689321 42372.72 87 84 39.9
C 15 163 1145509 28731.77 87 84 39.9
D 15 168 2800258 20254.85 457 440 138.2
D 15 185 1580813 11432.96 457 440 138.2
D 8 129 1575964 11397.88 457 440 138.2

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