ASTROSAT CZTI

Data Quality Report

Orbit 58957

Creation date: 2026-08-21T10:43:37.903549
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_58957cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58957cztM0_level2_quad_clean.evt
Size (bytes)2,061,930,240239,898,240
Size1.9 GB 228.8 MB
Events in quadrant A13,905,5181,743,131
Events in quadrant B21,110,1361,419,858
Events in quadrant C11,762,9791,667,292
Events in quadrant D28,083,3511,122,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546084
B0758268
C0483954
D0966754

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189909344.918378%
B18990507726.735124%
C189909575.039494%
D18990583030.700369%

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 20280 18995 807 807 3.98% 4.25%
B 20280 18995 3879 3879 19.13% 20.42%
C 20280 18995 868 868 4.28% 4.57%
D 20280 18995 5852 5852 28.86% 30.81%

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 14 238 5264530 10333.19 2066 2012 509.3
A 3 14 130022 251.35 2066 2012 509.3
A 13 248 103427 199.13 2066 2012 509.3
B 6 255 9033062 23414.65 1804 1733 385.7
B 2 249 1726614 4471.93 1804 1733 385.7
B 4 171 1333739 3453.36 1804 1733 385.7
C 12 252 2732025 5032.49 1996 1977 542.5
C 3 233 416438 764.0 1996 1977 542.5
C 4 5 370438 679.21 1996 1977 542.5
D 12 110 19023940 36990.63 1807 1727 514.2
D 11 129 773013 1499.84 1807 1727 514.2
D 7 222 276906 535.11 1807 1727 514.2

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