ASTROSAT CZTI

Data Quality Report

Orbit 55242

Creation date: 2025-12-14T03:52:25.040582
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_009T01_9000006534_55242cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55242cztM0_level2_quad_clean.evt
Size (bytes)491,402,88093,179,520
Size468.6 MB 88.9 MB
Events in quadrant A3,998,838612,353
Events in quadrant B2,961,832673,574
Events in quadrant C6,271,518537,126
Events in quadrant D4,457,372548,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165282
B0136472
C0232192
D0178762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64422844.408569%
B6442610.946911%
C644296715.010866%
D64422914.517231%

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 7592 6443 190 190 2.50% 2.95%
B 7592 6443 22 22 0.29% 0.34%
C 7592 6443 949 949 12.50% 14.73%
D 7592 6443 225 225 2.96% 3.49%

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 12 3 908290 5467.04 671 656 166.0
A 4 205 161966 971.63 671 656 166.0
A 12 194 114405 685.16 671 656 166.0
B 5 185 151241 1049.51 676 651 143.5
B 2 249 42116 288.98 676 651 143.5
B 10 247 25902 175.98 676 651 143.5
C 12 254 1314322 7574.55 627 623 173.4
C 6 13 1107397 6381.45 627 623 173.4
C 1 16 435217 2505.79 627 623 173.4
D 11 129 528046 2850.9 655 625 185.0
D 2 249 385857 2082.32 655 625 185.0
D 5 38 290070 1564.55 655 625 185.0

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