ASTROSAT CZTI

Data Quality Report

Orbit 54684

Creation date: 2025-11-13T13:24:32.776786
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_54684cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54684cztM0_level2_quad_clean.evt
Size (bytes)888,543,360142,329,600
Size847.4 MB 135.7 MB
Events in quadrant A5,029,873969,181
Events in quadrant B4,973,2101,041,275
Events in quadrant C6,970,507884,330
Events in quadrant D15,102,366685,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227480
B0227630
C0284141
D0522950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105271020.968937%
B105271091.035433%
C105275805.509642%
D10527263925.068871%

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 10527 10527 87 87 0.83% 0.83%
B 10527 10527 63 63 0.60% 0.60%
C 10527 10527 577 577 5.48% 5.48%
D 10527 10527 2619 2619 24.88% 24.88%

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 11 3 180689 659.87 1106 1078 272.2
A 0 8 153380 559.54 1106 1078 272.2
A 7 14 150940 550.57 1106 1078 272.2
B 2 249 395075 1660.0 1097 1056 237.4
B 10 247 107155 446.99 1097 1056 237.4
B 0 213 93826 390.84 1097 1056 237.4
C 15 157 2262672 7837.86 1051 1041 288.6
C 14 254 205806 709.63 1051 1041 288.6
C 12 252 101029 346.52 1051 1041 288.6
D 11 129 5445597 19675.66 961 919 276.7
D 2 172 1873235 6766.07 961 919 276.7
D 11 176 1561019 5637.8 961 919 276.7

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