ASTROSAT CZTI

Data Quality Report

Orbit 59136

Creation date: 2026-09-02T03:14:26.585460
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/AS1T05_264T01_9000006602_59136cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59136cztM0_level2_quad_clean.evt
Size (bytes)695,808,00086,889,600
Size663.6 MB 82.9 MB
Events in quadrant A3,988,751635,841
Events in quadrant B3,935,728703,359
Events in quadrant C3,220,996641,374
Events in quadrant D14,116,331205,458

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01631541
B0159477
C0140509
D046330121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63721993.123038%
B63772013.151952%
C6375620.972549%
D6363449870.689926%

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 7543 6376 111 111 1.47% 1.74%
B 7543 6379 132 132 1.75% 2.07%
C 7543 6379 35 35 0.46% 0.55%
D 7542 6365 4380 4380 58.07% 68.81%

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 789022 4473.58 719 704 176.2
A 13 248 229340 1297.47 719 704 176.2
A 10 251 132856 749.94 719 704 176.2
B 4 236 369336 2350.37 722 694 156.8
B 5 236 242364 1540.83 722 694 156.8
B 4 201 150098 952.56 722 694 156.8
C 5 250 179929 899.25 716 707 199.3
C 12 252 139774 697.77 716 707 199.3
C 7 255 30289 148.43 716 707 199.3
D 12 1 11651640 98733.0 402 383 118.0
D 12 110 292977 2479.45 402 383 118.0
D 2 62 219146 1853.8 402 383 118.0

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