ASTROSAT CZTI

Data Quality Report

Orbit 36104

Creation date: 2022-08-10T10:59:08.642507
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_36104cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36104cztM0_level2_quad_clean.evt
Size (bytes)472,075,20053,182,080
Size450.2 MB 50.7 MB
Events in quadrant A2,537,794325,908
Events in quadrant B3,146,788326,985
Events in quadrant C3,630,340314,555
Events in quadrant D4,633,292282,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105873
B0125492
C0137932
D0171982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513550.097371%
B51351332.590068%
C51353035.900682%
D513564912.638754%

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 7137 5136 0 0 0.00% 0.00%
B 7137 5136 85 85 1.19% 1.65%
C 7137 5136 261 261 3.66% 5.08%
D 7137 5136 531 531 7.44% 10.34%

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 174547 1420.5 605 592 122.5
A 8 144 19945 158.03 605 592 122.5
A 13 254 6419 47.58 605 592 122.5
B 5 236 321021 2804.17 597 581 114.3
B 5 172 259250 2263.61 597 581 114.3
B 5 255 72549 629.79 597 581 114.3
C 0 207 964466 7139.06 575 577 135.0
C 15 214 229526 1695.72 575 577 135.0
C 0 10 161930 1195.06 575 577 135.0
D 1 52 1065393 7760.14 558 541 137.2
D 12 6 604533 4401.61 558 541 137.2
D 2 250 308549 2244.61 558 541 137.2

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