ASTROSAT CZTI

Data Quality Report

Orbit 52657

Creation date: 2025-06-23T18:23:58.950249
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/AS1C09_011T07_9000006480_52657cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52657cztM0_level2_quad_clean.evt
Size (bytes)970,983,36069,687,360
Size926.0 MB 66.5 MB
Events in quadrant A3,306,181626,337
Events in quadrant B14,561,531159,431
Events in quadrant C9,724,989396,138
Events in quadrant D7,859,625484,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142832
B0476072
C0333322
D0277802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351931.464336%
B6351513580.853409%
C6350243938.409449%
D6350112017.637795%

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 7556 6352 45 45 0.60% 0.71%
B 7556 6351 4744 4744 62.78% 74.70%
C 7554 6349 2174 2174 28.78% 34.24%
D 7554 6349 1137 1137 15.05% 17.91%

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 3 14 293979 1766.73 666 650 166.0
A 4 249 65250 389.09 666 650 166.0
A 5 246 50578 300.72 666 650 166.0
B 10 128 11109721 124672.32 418 404 89.1
B 12 32 936695 10507.36 418 404 89.1
B 10 254 260513 2919.03 418 404 89.1
C 15 233 4088671 26476.42 550 545 154.4
C 15 158 2184274 14142.74 550 545 154.4
C 1 45 343838 2223.31 550 545 154.4
D 8 176 2274214 13069.33 604 577 174.0
D 1 7 833000 4784.94 604 577 174.0
D 6 42 591824 3398.61 604 577 174.0

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