ASTROSAT CZTI

Data Quality Report

Orbit 58893

Creation date: 2026-08-16T19:22:44.118566
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_58893cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58893cztM0_level2_quad_clean.evt
Size (bytes)464,794,560108,397,440
Size443.3 MB 103.4 MB
Events in quadrant A4,454,896715,215
Events in quadrant B3,993,461749,768
Events in quadrant C3,602,981678,885
Events in quadrant D4,597,418639,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179492
B0166213
C0157392
D0184202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71661401.953670%
B71652553.558967%
C71651091.521284%
D71651031.437544%

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 7972 7168 32 32 0.40% 0.45%
B 7971 7167 84 84 1.05% 1.17%
C 7971 7167 33 33 0.41% 0.46%
D 7971 7167 24 24 0.30% 0.33%

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 15 233 650096 3214.53 814 793 202.0
A 14 238 492229 2432.97 814 793 202.0
A 0 24 76054 372.6 814 793 202.0
B 4 171 228682 1341.08 793 765 169.9
B 4 201 167901 983.44 793 765 169.9
B 5 185 93800 547.43 793 765 169.9
C 3 233 166019 771.39 783 778 214.2
C 6 223 162747 756.12 783 778 214.2
C 12 249 100551 465.77 783 778 214.2
D 12 110 1034782 4595.18 790 755 225.0
D 11 129 95323 420.26 790 755 225.0
D 2 249 63169 277.36 790 755 225.0

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