ASTROSAT CZTI

Data Quality Report

Orbit 59096

Creation date: 2026-08-30T11:18:43.573394
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_004T02_9000006600_59096cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59096cztM0_level2_quad_clean.evt
Size (bytes)756,910,08083,989,440
Size721.8 MB 80.1 MB
Events in quadrant A3,413,535668,003
Events in quadrant B3,360,604706,581
Events in quadrant C3,560,903637,254
Events in quadrant D17,145,91950,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151222
B0149122
C0158092
D0554845

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69041542.230591%
B69052113.055757%
C69052313.345402%
D6904638292.439166%

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 7789 6905 25 25 0.32% 0.36%
B 7790 6907 49 49 0.63% 0.71%
C 7790 6906 149 149 1.91% 2.16%
D 7789 6906 6056 6056 77.75% 87.69%

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 208338 1088.97 776 755 190.6
A 3 245 88599 460.83 776 755 190.6
A 10 251 44423 229.08 776 755 190.6
B 4 201 85913 517.52 765 735 164.6
B 0 157 62223 373.58 765 735 164.6
B 5 236 50883 304.68 765 735 164.6
C 14 254 381176 1844.6 750 741 206.2
C 12 252 139890 674.69 750 741 206.2
C 6 223 42334 201.67 750 741 206.2
D 12 1 16033845 294082.72 187 178 54.5
D 15 234 145914 2673.03 187 178 54.5
D 6 239 91642 1677.59 187 178 54.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct