ASTROSAT CZTI

Data Quality Report

Orbit 54166

Creation date: 2025-10-02T17:29:45.526499
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/AS1A14_012T01_9000006512_54166cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54166cztM0_level2_quad_clean.evt
Size (bytes)653,590,08081,835,200
Size623.3 MB 78.0 MB
Events in quadrant A3,328,982618,241
Events in quadrant B7,866,905472,759
Events in quadrant C3,307,486590,075
Events in quadrant D9,197,308353,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143241
B0277171
C0145141
D0316991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63471512.379077%
B6347199031.353395%
C63471121.764613%
D6348249339.272212%

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 7422 6348 86 86 1.16% 1.35%
B 7422 6348 1362 1362 18.35% 21.46%
C 7422 6348 75 75 1.01% 1.18%
D 7423 6349 2120 2120 28.56% 33.39%

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 7 29 311799 1870.69 673 655 166.3
A 3 14 139096 832.35 673 655 166.3
A 15 174 122276 731.22 673 655 166.3
B 5 172 2531085 21081.54 564 545 120.0
B 6 255 1965377 16368.71 564 545 120.0
B 15 20 633694 5274.66 564 545 120.0
C 15 177 345451 1938.28 644 637 177.9
C 14 254 208636 1169.21 644 637 177.9
C 12 2 98583 550.58 644 637 177.9
D 8 176 6812651 47278.48 505 482 144.1
D 10 181 94036 649.29 505 482 144.1
D 3 176 49200 338.12 505 482 144.1

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