ASTROSAT CZTI

Data Quality Report

Orbit 50752

Creation date: 2025-02-14T20:19:35.613925
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_001T01_9000006450_50752cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50752cztM0_level2_quad_clean.evt
Size (bytes)604,195,20090,642,240
Size576.2 MB 86.4 MB
Events in quadrant A6,932,185567,052
Events in quadrant B3,792,614658,753
Events in quadrant C4,970,260568,120
Events in quadrant D6,178,051506,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249621
B0157051
C0190621
D0227001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636370911.142543%
B63621692.656397%
C63622884.526878%
D636366310.419613%

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 7362 6362 533 533 7.24% 8.38%
B 7361 6361 51 51 0.69% 0.80%
C 7361 6361 238 238 3.23% 3.74%
D 7362 6362 647 647 8.79% 10.17%

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 4 4 3248648 19372.8 672 654 167.7
A 4 3 341429 2032.57 672 654 167.7
A 8 38 200531 1192.18 672 654 167.7
B 7 0 515930 3536.41 679 655 145.7
B 10 247 168921 1154.83 679 655 145.7
B 10 60 80739 549.63 679 655 145.7
C 15 179 1002879 5544.41 659 651 180.8
C 13 3 256574 1415.79 659 651 180.8
C 5 10 151704 835.64 659 651 180.8
D 2 216 765842 4289.72 640 616 178.4
D 1 47 505703 2831.43 640 616 178.4
D 15 93 468510 2622.93 640 616 178.4

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