ASTROSAT CZTI

Data Quality Report

Orbit 51973

Creation date: 2025-05-08T03:19:14.293408
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/AS1C09_011T06_9000006468_51973cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51973cztM0_level2_quad_clean.evt
Size (bytes)819,815,04083,931,840
Size781.8 MB 80.0 MB
Events in quadrant A6,292,641576,713
Events in quadrant B4,936,922637,313
Events in quadrant C9,366,566404,265
Events in quadrant D9,257,953476,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232133
B0191752
C0322742
D0319222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638268110.670636%
B63835067.927307%
C6383247738.806204%
D6383144222.591258%

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 7536 6382 531 531 7.05% 8.32%
B 7538 6384 306 306 4.06% 4.79%
C 7538 6383 1873 1873 24.85% 29.34%
D 7538 6384 1434 1434 19.02% 22.46%

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 7 64 1521755 9222.26 657 642 164.9
A 4 249 548940 3324.24 657 642 164.9
A 3 14 537439 3254.51 657 642 164.9
B 4 249 367291 2643.3 664 643 138.7
B 4 170 325359 2341.0 664 643 138.7
B 4 81 189314 1360.2 664 643 138.7
C 15 224 5733031 37823.45 546 542 151.6
C 15 147 605274 3990.07 546 542 151.6
C 13 3 273345 1799.98 546 542 151.6
D 2 172 2857504 15918.43 624 596 179.5
D 6 42 2035667 11339.23 624 596 179.5
D 10 199 601534 3348.37 624 596 179.5

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