ASTROSAT CZTI

Data Quality Report

Orbit 37553

Creation date: 2024-06-27T21:41:27.412885
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/AS1T05_051T01_9000005334_37553cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37553cztM0_level2_quad_clean.evt
Size (bytes)422,674,56060,693,120
Size403.1 MB 57.9 MB
Events in quadrant A2,774,562368,782
Events in quadrant B2,973,977372,946
Events in quadrant C3,443,476360,789
Events in quadrant D3,234,662349,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115213
B0123412
C0135552
D0134342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504150.272529%
B5504861.562500%
C55042254.087936%
D55041773.215843%

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 7177 5505 10 10 0.14% 0.18%
B 7177 5505 68 68 0.95% 1.24%
C 7177 5505 200 200 2.79% 3.63%
D 7177 5505 171 171 2.38% 3.11%

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 308048 2436.76 623 609 126.2
A 15 222 19593 150.47 623 609 126.2
A 13 6 13564 102.68 623 609 126.2
B 0 221 119259 998.02 621 604 118.9
B 5 172 103545 865.85 621 604 118.9
B 3 112 98883 826.64 621 604 118.9
C 14 254 721380 5196.29 597 602 138.7
C 15 214 231711 1666.13 597 602 138.7
C 0 10 99775 714.97 597 602 138.7
D 2 249 433646 2957.54 598 580 146.4
D 7 55 117566 798.93 598 580 146.4
D 12 233 87310 592.3 598 580 146.4

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