ASTROSAT CZTI

Data Quality Report

Orbit 58716

Creation date: 2026-08-04T21:17:47.308866
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_004T06_9000006594_58716cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58716cztM0_level2_quad_clean.evt
Size (bytes)501,716,16092,479,680
Size478.5 MB 88.2 MB
Events in quadrant A3,955,032628,691
Events in quadrant B4,064,438654,211
Events in quadrant C3,258,006593,668
Events in quadrant D6,821,170498,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163641
B0160721
C0139641
D0244701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60961342.198163%
B60962974.872047%
C60971592.607840%
D6097100216.434312%

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 7246 6096 28 28 0.39% 0.46%
B 7246 6096 141 141 1.95% 2.31%
C 7247 6097 87 87 1.20% 1.43%
D 7246 6096 838 838 11.57% 13.75%

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 1020083 5932.49 694 676 171.8
A 10 251 162424 941.3 694 676 171.8
A 12 114 43622 249.93 694 676 171.8
B 8 234 374540 2578.66 674 647 145.0
B 5 172 334976 2305.8 674 647 145.0
B 6 255 171959 1181.5 674 647 145.0
C 13 3 203479 1099.37 673 667 184.5
C 12 252 119771 645.62 673 667 184.5
C 12 250 98623 530.99 673 667 184.5
D 11 129 2795422 15464.91 636 608 180.7
D 2 62 547831 3028.02 636 608 180.7
D 8 240 333339 1841.14 636 608 180.7

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