ASTROSAT CZTI

Data Quality Report

Orbit 53163

Creation date: 2025-07-31T13:41:36.907429
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_9000006490_53163cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53163cztM0_level2_quad_clean.evt
Size (bytes)594,305,28092,799,360
Size566.8 MB 88.5 MB
Events in quadrant A3,715,564637,754
Events in quadrant B5,138,315655,925
Events in quadrant C8,217,657506,883
Events in quadrant D4,423,081555,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159742
B0198426
C0289182
D0181152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65081782.735095%
B65074416.777317%
C6507141121.684340%
D65084546.976030%

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 7608 6509 137 137 1.80% 2.10%
B 7607 6508 285 285 3.75% 4.38%
C 7607 6508 1399 1399 18.39% 21.50%
D 7608 6509 358 358 4.71% 5.50%

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 15 174 428808 2530.49 674 660 169.2
A 4 249 307484 1813.43 674 660 169.2
A 3 14 128845 757.61 674 660 169.2
B 10 191 1367438 9689.77 663 641 141.1
B 1 239 410888 2908.4 663 641 141.1
B 4 81 361692 2559.63 663 641 141.1
C 0 240 1833239 10765.45 617 612 170.2
C 10 22 1370512 8047.24 617 612 170.2
C 1 241 1063346 6242.85 617 612 170.2
D 10 172 784272 4264.52 645 617 183.8
D 12 3 209982 1139.33 645 617 183.8
D 13 170 168273 912.36 645 617 183.8

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