ASTROSAT CZTI

Data Quality Report

Orbit 56651

Creation date: 2026-03-18T23:13:00.828183
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_083T06_9000006558_56651cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56651cztM0_level2_quad_clean.evt
Size (bytes)450,506,88096,111,360
Size429.6 MB 91.7 MB
Events in quadrant A2,943,512647,005
Events in quadrant B4,834,180653,344
Events in quadrant C3,980,989599,206
Events in quadrant D4,414,263558,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134982
B0188102
C0164732
D0175932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475370.571429%
B64755127.907336%
C64761582.439778%
D64762573.968499%

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 7645 6476 25 25 0.33% 0.39%
B 7645 6476 366 366 4.79% 5.65%
C 7646 6477 127 127 1.66% 1.96%
D 7646 6477 250 250 3.27% 3.86%

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 10 251 60814 344.29 709 690 174.6
A 13 248 58071 328.58 709 690 174.6
A 8 249 38652 217.38 709 690 174.6
B 4 21 1151436 8012.43 675 652 143.6
B 5 185 507177 3526.72 675 652 143.6
B 4 206 147783 1024.41 675 652 143.6
C 12 252 702369 3794.88 670 665 184.9
C 13 3 402177 2171.42 670 665 184.9
C 1 16 143096 770.28 670 665 184.9
D 12 3 533776 2847.41 666 636 187.2
D 2 249 278581 1484.46 666 636 187.2
D 2 31 229441 1222.01 666 636 187.2

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