ASTROSAT CZTI

Data Quality Report

Orbit 59008

Creation date: 2026-08-24T14:54:46.771728
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_004T07_9000006598_59008cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_59008cztM0_level2_quad_clean.evt
Size (bytes)482,054,40060,036,480
Size459.7 MB 57.3 MB
Events in quadrant A4,640,310356,175
Events in quadrant B2,288,004479,365
Events in quadrant C3,630,922422,247
Events in quadrant D6,939,446247,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167231
B098631
C0138601
D0236921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A444399522.394778%
B4443871.958136%
C44431162.610849%
D4443191243.033986%

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 4442 4442 904 904 20.35% 20.35%
B 4443 4443 45 45 1.01% 1.01%
C 4443 4443 109 109 2.45% 2.45%
D 4442 4442 1781 1781 40.09% 40.09%

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 14 238 2205541 20269.41 436 425 108.8
A 10 251 316041 2901.14 436 425 108.8
A 3 14 216849 1989.37 436 425 108.8
B 4 236 141628 1353.29 486 468 104.3
B 8 234 53544 508.84 486 468 104.3
B 0 63 36958 349.83 486 468 104.3
C 15 219 1435106 11021.83 471 468 130.2
C 6 223 293611 2252.12 471 468 130.2
C 15 200 27236 205.65 471 468 130.2
D 12 110 4975575 41791.44 411 392 119.0
D 2 31 179837 1507.33 411 392 119.0
D 11 129 64162 535.66 411 392 119.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct