ASTROSAT CZTI

Data Quality Report

Orbit 54616

Creation date: 2025-11-02T02:18:03.899658
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_066T07_9000006522_54616cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54616cztM0_level2_quad_clean.evt
Size (bytes)369,573,12093,317,760
Size352.5 MB 89.0 MB
Events in quadrant A3,162,463612,192
Events in quadrant B3,525,524647,374
Events in quadrant C3,340,742582,608
Events in quadrant D3,171,566553,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137751
B0146991
C0144202
D0137291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61651662.692620%
B61651973.195458%
C61651151.865369%
D6165871.411192%

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 7255 6165 86 86 1.19% 1.39%
B 7255 6165 94 94 1.30% 1.52%
C 7255 6165 41 41 0.57% 0.67%
D 7255 6165 33 33 0.45% 0.54%

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 13 248 161752 943.32 694 676 170.8
A 11 3 154869 903.01 694 676 170.8
A 5 240 64040 371.08 694 676 170.8
B 5 172 363522 2465.38 684 660 147.2
B 1 207 225612 1528.39 684 660 147.2
B 8 234 48963 328.18 684 660 147.2
C 4 5 244234 1297.44 681 675 187.7
C 13 3 117546 622.57 681 675 187.7
C 6 223 79028 417.39 681 675 187.7
D 3 12 117633 604.4 682 654 193.5
D 3 176 82224 421.45 682 654 193.5
D 2 172 62854 321.37 682 654 193.5

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