ASTROSAT CZTI

Data Quality Report

Orbit 16818

Creation date: 2024-06-27T17:28:10.226641
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/AS1A05_140T01_9000002496_16818cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16818cztM0_level2_quad_clean.evt
Size (bytes)1,769,466,240278,452,800
Size1.6 GB 265.6 MB
Events in quadrant A12,704,2681,761,449
Events in quadrant B11,859,0761,813,197
Events in quadrant C11,236,8771,746,182
Events in quadrant D16,377,3221,670,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508875
B0483804
C0460214
D0626764

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209447223.447288%
B209443171.513560%
C209442721.298701%
D2094412525.977846%

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 25456 20949 400 400 1.57% 1.91%
B 25456 20949 59 59 0.23% 0.28%
C 25456 20949 1 1 0.00% 0.00%
D 25456 20949 870 870 3.42% 4.15%

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 15 174 2461776 4699.9 2623 2574 523.2
A 9 143 166632 313.54 2623 2574 523.2
A 0 226 22987 39.01 2623 2574 523.2
B 15 35 535535 1083.67 2629 2569 491.8
B 7 220 286454 577.22 2629 2569 491.8
B 0 189 233047 468.63 2629 2569 491.8
C 3 233 614103 1039.11 2558 2582 588.5
C 14 238 397163 670.48 2558 2582 588.5
C 0 207 248932 418.6 2558 2582 588.5
D 1 52 5202371 8359.5 2552 2479 622.0
D 15 0 525208 840.35 2552 2479 622.0
D 2 33 461111 737.31 2552 2479 622.0

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