ASTROSAT CZTI

Data Quality Report

Orbit 42098

Creation date: 2024-06-27T22:36:48.096115
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/AS1A12_088T08_9000005748_42098cztM0_level2.fits modeM0/AS1A12_088T08_9000005748_42098cztM0_level2_quad_clean.evt
Size (bytes)338,869,44086,771,520
Size323.2 MB 82.8 MB
Events in quadrant A4,977,999572,966
Events in quadrant B2,270,092615,318
Events in quadrant C2,356,777574,623
Events in quadrant D2,553,622517,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182633
B0100952
C0100192
D0111802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49492444.930289%
B4949250.505153%
C494940.080824%
D4949731.475045%

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 7072 4950 259 259 3.66% 5.23%
B 7072 4950 13 13 0.18% 0.26%
C 7072 4950 0 0 0.00% 0.00%
D 7072 4950 71 71 1.00% 1.43%

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 15 222 2354864 20914.34 551 542 112.6
A 10 83 484641 4300.44 551 542 112.6
A 13 6 7528 62.06 551 542 112.6
B 5 255 59044 541.77 560 545 108.0
B 12 111 13424 119.27 560 545 108.0
B 14 111 12357 109.39 560 545 108.0
C 15 214 206524 1611.51 548 552 127.8
C 15 111 12764 95.55 548 552 127.8
C 13 61 3746 24.99 548 552 127.8
D 1 52 169009 1299.3 536 523 129.7
D 2 249 132366 1016.73 536 523 129.7
D 12 6 102856 789.16 536 523 129.7

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