ASTROSAT CZTI

Data Quality Report

Orbit 09931

Creation date: 2024-06-27T15:52:32.834236
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/AS1A02_029T01_9000001416_09931cztM0_level2.evt modeM0/AS1A02_029T01_9000001416_09931cztM0_level2_quad_clean.evt
Size (bytes)495,616,32072,838,080
Size472.7 MB 69.5 MB
Events in quadrant A3,640,408450,389
Events in quadrant B3,103,084469,415
Events in quadrant C2,794,075463,130
Events in quadrant D5,059,021397,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01306
B013012
C01306
D01304

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015728704
B013842476
C012912457
D0203251203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60811262.072028%
B6116350.572269%
C6114160.261694%
D60185398.956464%

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 7443 6302 64 64 0.86% 1.02%
B 7443 6298 5 5 0.07% 0.08%
C 7443 6295 0 0 0.00% 0.00%
D 7443 6259 492 492 6.61% 7.86%

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 15 239 856511 5904.92 717 704 144.9
A 15 174 16857 111.45 717 704 144.9
A 13 253 6776 41.9 717 704 144.9
B 0 214 90494 634.73 737 720 141.4
B 4 239 55301 385.91 737 720 141.4
B 4 81 27336 188.18 737 720 141.4
C 12 4 11122 63.31 708 712 164.4
C 8 128 10148 57.39 708 712 164.4
C 8 112 5799 30.94 708 712 164.4
D 2 16 1218492 7155.15 661 643 170.2
D 1 52 762069 4473.56 661 643 170.2
D 8 195 261562 1532.96 661 643 170.2

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