ASTROSAT CZTI

Data Quality Report

Orbit 36041

Creation date: 2022-08-09T23:44:10.596042
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/AS1T04_069T01_9000005158_36041cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36041cztM0_level2_quad_clean.evt
Size (bytes)478,048,32065,603,520
Size455.9 MB 62.6 MB
Events in quadrant A2,611,596424,316
Events in quadrant B3,514,162422,318
Events in quadrant C4,697,173370,891
Events in quadrant D3,288,277390,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112063
B0139402
C0173572
D0135372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538990.167007%
B53892033.766933%
C538968912.785303%
D53892133.952496%

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 7182 5390 0 0 0.00% 0.00%
B 7182 5390 138 138 1.92% 2.56%
C 7182 5389 573 573 7.98% 10.63%
D 7182 5390 168 168 2.34% 3.12%

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 10 83 167371 1306.35 623 610 127.7
A 0 31 24730 188.95 623 610 127.7
A 13 6 8151 59.07 623 610 127.7
B 5 236 737251 6227.01 613 598 118.3
B 0 213 143776 1210.3 613 598 118.3
B 0 190 131943 1110.27 613 598 118.3
C 9 187 1975701 14801.32 570 573 133.4
C 0 10 234538 1753.3 570 573 133.4
C 15 214 212399 1587.39 570 573 133.4
D 2 250 512378 3545.27 590 573 144.4
D 10 118 95842 659.93 590 573 144.4
D 12 235 82913 570.37 590 573 144.4

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