ASTROSAT CZTI

Data Quality Report

Orbit 58944

Creation date: 2026-08-20T08:09:02.012259
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_004T07_9000006598_58944cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58944cztM0_level2_quad_clean.evt
Size (bytes)534,205,440102,496,320
Size509.5 MB 97.7 MB
Events in quadrant A5,325,083641,037
Events in quadrant B4,301,475706,616
Events in quadrant C4,733,282651,787
Events in quadrant D4,864,591610,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208802
B0178482
C0188853
D0194222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70866649.370590%
B70873985.615916%
C70861822.568445%
D70862343.302286%

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 8741 7086 499 499 5.71% 7.04%
B 8742 7087 201 201 2.30% 2.84%
C 8741 7087 127 127 1.45% 1.79%
D 8741 7087 220 220 2.52% 3.10%

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 14 238 1682596 9038.56 755 736 186.1
A 15 233 447425 2400.57 755 736 186.1
A 10 251 152137 813.65 755 736 186.1
B 2 249 550110 3352.46 761 732 163.9
B 4 171 307099 1869.54 761 732 163.9
B 4 236 139394 846.15 761 732 163.9
C 9 53 796444 3785.97 760 753 210.2
C 4 5 306144 1453.08 760 753 210.2
C 6 223 185372 878.43 760 753 210.2
D 11 129 1146423 5317.73 755 720 215.4
D 7 222 469708 2176.79 755 720 215.4
D 2 31 50668 231.83 755 720 215.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct