ASTROSAT CZTI

Data Quality Report

Orbit 51047

Creation date: 2025-03-06T17:35:52.850161
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/AS1C07_001T02_9000006452_51047cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51047cztM0_level2_quad_clean.evt
Size (bytes)747,005,76085,769,280
Size712.4 MB 81.8 MB
Events in quadrant A10,048,263479,371
Events in quadrant B5,070,527615,667
Events in quadrant C6,459,966527,457
Events in quadrant D5,566,072516,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344368
B0196391
C0236891
D0212241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556189028.828554%
B655671710.936547%
C655692014.032947%
D65576539.958823%

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 7350 6555 1669 1669 22.71% 25.46%
B 7351 6556 424 424 5.77% 6.47%
C 7351 6556 659 659 8.96% 10.05%
D 7352 6557 575 575 7.82% 8.77%

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 80 2515594 15750.14 644 627 159.7
A 12 3 1633673 10227.06 644 627 159.7
A 10 253 1510808 9457.61 644 627 159.7
B 12 32 663237 4721.67 665 643 140.3
B 4 81 657078 4677.78 665 643 140.3
B 4 206 216453 1537.87 665 643 140.3
C 12 249 1981013 11363.37 637 632 174.3
C 15 158 637372 3653.6 637 632 174.3
C 12 247 202801 1160.04 637 632 174.3
D 8 176 1351397 7097.69 655 629 190.3
D 13 168 299116 1568.42 655 629 190.3
D 9 1 235262 1232.89 655 629 190.3

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