ASTROSAT CZTI

Data Quality Report

Orbit 56480

Creation date: 2026-03-07T11:54:01.489875
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_060T01_9000006556_56480cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56480cztM0_level2_quad_clean.evt
Size (bytes)627,232,32093,749,760
Size598.2 MB 89.4 MB
Events in quadrant A10,461,490467,185
Events in quadrant B4,455,196686,113
Events in quadrant C3,579,680618,534
Events in quadrant D4,181,720581,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358612
B0177703
C0158482
D0172612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6958243134.938201%
B69574356.252695%
C69572663.823487%
D69572052.946672%

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 7773 6959 2087 2087 26.85% 29.99%
B 7772 6958 218 218 2.80% 3.13%
C 7772 6958 135 135 1.74% 1.94%
D 7772 6958 104 104 1.34% 1.49%

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 4 95 2698120 16184.64 676 659 166.7
A 7 64 2601245 15603.39 676 659 166.7
A 12 3 1666260 9993.53 676 659 166.7
B 5 172 1094954 6694.3 760 731 163.5
B 0 63 194581 1185.95 760 731 163.5
B 10 247 40547 243.59 760 731 163.5
C 12 249 286426 1375.5 752 744 207.7
C 11 227 207118 993.65 752 744 207.7
C 12 252 73598 350.78 752 744 207.7
D 2 249 462171 2190.7 748 715 210.6
D 12 4 230220 1089.54 748 715 210.6
D 3 12 138503 654.13 748 715 210.6

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