ASTROSAT CZTI

Data Quality Report

Orbit 12894

Creation date: 2024-06-27T16:33:38.025003
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/AS1C03_001T01_9000001894_12894cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12894cztM0_level2_quad_clean.evt
Size (bytes)408,219,840100,704,960
Size389.3 MB 96.0 MB
Events in quadrant A2,626,393687,255
Events in quadrant B4,495,666632,430
Events in quadrant C2,429,481684,283
Events in quadrant D2,436,050659,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114512
B0170162
C0112062
D0113602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5513240.435335%
B551382715.000907%
C551370.126973%
D5513150.272084%

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 6614 5515 0 0 0.00% 0.00%
B 6614 5515 500 500 7.56% 9.07%
C 6614 5515 0 0 0.00% 0.00%
D 6614 5515 5 5 0.08% 0.09%

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 1 162 59012 445.97 643 629 130.9
A 1 178 29191 218.17 643 629 130.9
A 1 161 24818 184.77 643 629 130.9
B 4 239 1795775 16055.37 590 575 111.8
B 0 85 142169 1266.35 590 575 111.8
B 3 64 127176 1132.26 590 575 111.8
C 13 61 4483 26.76 622 624 144.2
C 4 112 2350 11.97 622 624 144.2
C 3 202 1558 6.48 622 624 144.2
D 1 52 32630 216.38 617 597 148.0
D 2 234 19798 129.7 617 597 148.0
D 10 253 18200 118.91 617 597 148.0

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