ASTROSAT CZTI

Data Quality Report

Orbit 35651

Creation date: 2022-05-02T22:42:32.820885
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/AS1C07_001T07_9000005104_35651cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35651cztM0_level2_quad_clean.evt
Size (bytes)764,988,48090,247,680
Size729.5 MB 86.1 MB
Events in quadrant A12,681,395323,840
Events in quadrant B3,438,228686,646
Events in quadrant C3,059,736704,777
Events in quadrant D3,647,894662,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411192
B0136251
C0121761
D0142631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031493998.171338%
B50313316.579209%
C50311212.405088%
D50312755.466110%

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 6973 5032 4765 4765 68.34% 94.69%
B 6973 5032 230 230 3.30% 4.57%
C 6973 5032 92 92 1.32% 1.83%
D 6973 5032 197 197 2.83% 3.91%

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 15 169 11293649 166429.42 337 331 67.9
A 10 83 74201 1088.62 337 331 67.9
A 13 254 4384 59.73 337 331 67.9
B 5 172 1090067 9847.63 585 572 110.6
B 15 85 20603 181.05 585 572 110.6
B 12 111 12784 110.38 585 572 110.6
C 0 10 292930 2158.23 595 600 135.4
C 15 214 206137 1517.45 595 600 135.4
C 1 23 160385 1179.67 595 600 135.4
D 10 118 289015 2059.71 587 572 140.0
D 2 249 288479 2055.88 587 572 140.0
D 12 233 183744 1307.99 587 572 140.0

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