ASTROSAT CZTI

Data Quality Report

Orbit 24018

Creation date: 2024-06-27T19:01:12.461401
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/AS1A07_165T01_9000003558_24018cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24018cztM0_level2_quad_clean.evt
Size (bytes)546,465,600132,514,560
Size521.2 MB 126.4 MB
Events in quadrant A3,559,879902,293
Events in quadrant B3,384,337917,275
Events in quadrant C3,356,624873,845
Events in quadrant D5,772,881831,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152161
B0146451
C0145561
D0219911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70221011.438337%
B7023891.267265%
C70231011.438132%
D70234145.894917%

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 7297 7023 28 28 0.38% 0.40%
B 7298 7024 2 2 0.03% 0.03%
C 7298 7024 6 6 0.08% 0.09%
D 7298 7024 288 288 3.95% 4.10%

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 6 16 276822 1640.91 836 819 168.2
A 2 250 34552 200.55 836 819 168.2
A 0 254 22124 126.66 836 819 168.2
B 0 189 41617 258.58 834 812 157.8
B 3 209 19961 121.35 834 812 157.8
B 12 111 18145 109.84 834 812 157.8
C 14 238 126679 686.29 794 797 183.4
C 10 9 94960 513.36 794 797 183.4
C 0 239 29358 155.71 794 797 183.4
D 8 195 1263800 6512.44 792 767 193.9
D 1 52 917612 4727.43 792 767 193.9
D 12 218 391334 2013.84 792 767 193.9

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