ASTROSAT CZTI

Data Quality Report

Orbit 52061

Creation date: 2025-05-14T00:35:29.224074
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/AS1C09_011T06_9000006468_52061cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52061cztM0_level2_quad_clean.evt
Size (bytes)895,150,08068,270,400
Size853.7 MB 65.1 MB
Events in quadrant A3,538,655584,317
Events in quadrant B5,993,068561,923
Events in quadrant C7,454,859475,442
Events in quadrant D15,685,11726,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144881
B0219141
C0262731
D0507421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59961993.318879%
B599692215.376918%
C5996138023.015344%
D5996576296.097398%

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 7202 5997 130 130 1.81% 2.17%
B 7202 5997 713 713 9.90% 11.89%
C 7202 5996 1217 1217 16.90% 20.30%
D 7201 5995 5668 5668 78.71% 94.55%

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 8 43 417766 2656.98 631 615 157.0
A 4 3 181209 1150.27 631 615 157.0
A 3 95 55289 348.24 631 615 157.0
B 0 172 1414951 11154.28 605 585 126.8
B 8 3 1157324 9122.53 605 585 126.8
B 10 254 398405 3137.37 605 585 126.8
C 15 224 3398358 21787.67 566 562 156.0
C 12 249 602648 3860.75 566 562 156.0
C 13 3 397937 2548.09 566 562 156.0
D 15 94 9697973 161331.23 201 191 60.1
D 6 42 2201399 36619.05 201 191 60.1
D 12 3 987056 16417.38 201 191 60.1

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