ASTROSAT CZTI

Data Quality Report

Orbit 08048

Creation date: 2024-06-27T15:27:15.674986
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/AS1G05_246T02_9000001106_08048cztM0_level2.evt modeM0/AS1G05_246T02_9000001106_08048cztM0_level2_quad_clean.evt
Size (bytes)1,523,364,480320,541,120
Size1.4 GB 305.7 MB
Events in quadrant A11,166,1642,112,749
Events in quadrant B10,516,2832,171,130
Events in quadrant C10,584,0782,068,997
Events in quadrant D12,474,8711,935,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470165
B0448524
C0454764
D0516694

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206344502.180867%
B206343391.642919%
C206343971.924009%
D206349374.541049%

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 25779 20638 125 125 0.48% 0.61%
B 25779 20638 51 51 0.20% 0.25%
C 25779 20638 188 188 0.73% 0.91%
D 25779 20638 721 721 2.80% 3.49%

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 4 2 1057961 2124.59 2488 2446 496.8
A 15 79 488182 977.71 2488 2446 496.8
A 0 128 53778 103.32 2488 2446 496.8
B 4 239 376802 792.29 2537 2477 472.5
B 4 81 119424 247.53 2537 2477 472.5
B 5 250 94104 193.94 2537 2477 472.5
C 4 254 987145 1778.11 2421 2437 553.8
C 1 16 143007 253.83 2421 2437 553.8
C 13 61 18438 28.89 2421 2437 553.8
D 1 52 2793625 4550.03 2341 2285 613.5
D 2 136 223851 361.16 2341 2285 613.5
D 13 169 206756 333.3 2341 2285 613.5

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