ASTROSAT CZTI

Data Quality Report

Orbit 54700

Creation date: 2025-11-13T14:33:57.522071
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_066T07_9000006522_54700cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54700cztM0_level2_quad_clean.evt
Size (bytes)183,919,68036,008,640
Size175.4 MB 34.3 MB
Events in quadrant A1,473,240230,362
Events in quadrant B2,094,280248,705
Events in quadrant C1,249,070223,548
Events in quadrant D1,781,430196,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0636748
B0815683
C0576226
D0735887

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2669592.210566%
B2675823.065421%
C2681170.634092%
D26712017.525271%

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 2698 2688 44 44 1.63% 1.64%
B 2699 2695 66 66 2.45% 2.45%
C 2699 2692 16 16 0.59% 0.59%
D 2699 2691 169 169 6.26% 6.28%

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 13 248 150868 2280.58 264 256 66.0
A 0 8 110561 1670.25 264 256 66.0
A 7 190 52802 795.66 264 256 66.0
B 2 249 729460 12794.31 257 248 57.0
B 7 0 281573 4935.96 257 248 57.0
B 0 213 31256 544.05 257 248 57.0
C 9 38 119377 1667.07 257 255 71.5
C 4 5 33381 463.59 257 255 71.5
C 1 16 21975 303.96 257 255 71.5
D 11 129 513395 7189.2 250 238 71.4
D 6 239 62749 875.76 250 238 71.4
D 3 224 58843 821.04 250 238 71.4

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