ASTROSAT CZTI

Data Quality Report

Orbit 36708

Creation date: 2024-06-27T21:30:34.890503
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/AS1C07_001T09_9000005236_36708cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36708cztM0_level2_quad_clean.evt
Size (bytes)412,531,200103,944,960
Size393.4 MB 99.1 MB
Events in quadrant A2,630,473701,725
Events in quadrant B2,685,340718,135
Events in quadrant C3,389,493693,629
Events in quadrant D3,419,508654,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113903
B0115022
C0134952
D0139132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5424170.313422%
B5424150.276549%
C54241773.263274%
D54241693.115782%

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 7367 5425 5 5 0.07% 0.09%
B 7367 5425 6 6 0.08% 0.11%
C 7367 5425 145 145 1.97% 2.67%
D 7367 5425 153 153 2.08% 2.82%

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 10 83 209923 1720.13 609 597 121.7
A 9 143 37303 301.63 609 597 121.7
A 7 3 12672 99.23 609 597 121.7
B 0 221 88058 753.66 613 596 116.0
B 5 255 65652 560.59 613 596 116.0
B 5 172 25069 210.88 613 596 116.0
C 14 254 417693 3077.85 588 591 135.5
C 0 10 403170 2970.68 588 591 135.5
C 15 214 243131 1789.73 588 591 135.5
D 13 249 327427 2286.95 583 565 142.9
D 13 171 316403 2209.82 583 565 142.9
D 12 233 185729 1295.53 583 565 142.9

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