ASTROSAT CZTI

Data Quality Report

Orbit 34943

Creation date: 2022-03-16T03:43:19.934512
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/AS1A11_069T01_9000005008_34943cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34943cztM0_level2_quad_clean.evt
Size (bytes)791,712,00056,229,120
Size755.0 MB 53.6 MB
Events in quadrant A11,264,240134,690
Events in quadrant B3,118,648445,577
Events in quadrant C2,833,523436,622
Events in quadrant D6,421,728331,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367113
B0123302
C0112612
D0225062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5020434486.533865%
B50201723.426295%
C5020801.593625%
D5020124124.721116%

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 7113 5020 4244 4244 59.67% 84.54%
B 7114 5021 151 151 2.12% 3.01%
C 7114 5021 71 71 1.00% 1.41%
D 7114 5021 1217 1217 17.11% 24.24%

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 10353029 225120.47 225 222 46.0
A 10 83 25476 549.15 225 222 46.0
A 13 6 5993 125.49 225 222 46.0
B 5 172 588499 5198.99 606 591 113.1
B 0 190 87999 772.97 606 591 113.1
B 4 232 49706 434.33 606 591 113.1
C 0 10 262584 1899.44 597 602 137.9
C 15 214 210695 1523.23 597 602 137.9
C 2 16 9968 67.91 597 602 137.9
D 1 47 1607165 12303.12 535 521 130.6
D 2 31 538419 4119.04 535 521 130.6
D 1 52 530317 4056.99 535 521 130.6

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