ASTROSAT CZTI

Data Quality Report

Orbit 58597

Creation date: 2026-07-28T14:47:15.455844
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_044T04_9000006592_58597cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58597cztM0_level2_quad_clean.evt
Size (bytes)944,686,08066,165,120
Size900.9 MB 63.1 MB
Events in quadrant A8,260,918428,503
Events in quadrant B7,862,216480,297
Events in quadrant C13,029,046158,782
Events in quadrant D5,339,413503,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286423
B0275701
C0430031
D0200481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181198832.163080%
B6182189130.588806%
C6182462374.781624%
D61825809.382077%

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 7175 6180 1876 1876 26.15% 30.36%
B 7177 6182 1637 1637 22.81% 26.48%
C 7176 6181 4455 4455 62.08% 72.08%
D 7177 6182 585 585 8.15% 9.46%

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 3 14 5781971 42004.35 554 540 137.6
A 12 114 69165 498.59 554 540 137.6
A 10 251 61904 445.83 554 540 137.6
B 6 255 3477940 27596.51 580 559 126.0
B 5 172 1378508 10935.41 580 559 126.0
B 8 234 186741 1477.54 580 559 126.0
C 15 164 11549774 141058.1 293 292 81.9
C 2 12 132427 1613.81 293 292 81.9
C 12 252 62898 764.63 293 292 81.9
D 3 12 1318219 7149.4 645 616 184.3
D 2 249 473412 2565.42 645 616 184.3
D 11 129 343438 1860.17 645 616 184.3

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