ASTROSAT CZTI

Data Quality Report

Orbit 50133

Creation date: 2025-01-08T16:47:30.853550
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_003T01_9000006442_50133cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50133cztM0_level2_quad_clean.evt
Size (bytes)1,402,891,20054,529,920
Size1.3 GB 52.0 MB
Events in quadrant A15,436,980169,058
Events in quadrant B8,829,418563,084
Events in quadrant C15,208,69587,697
Events in quadrant D11,922,161346,777

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506031
B0310381
C0498821
D0402163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6946536177.181111%
B6946172424.820040%
C6946607887.503599%
D6945310844.751620%

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 7516 6948 4937 4937 65.69% 71.06%
B 7516 6948 1399 1399 18.61% 20.14%
C 7516 6947 4753 4753 63.24% 68.42%
D 7515 6947 2896 2896 38.54% 41.69%

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 6 250 6504957 52336.05 481 467 124.3
A 0 98 2020474 16253.26 481 467 124.3
A 4 13 2000403 16091.77 481 467 124.3
B 4 170 4725887 33795.58 658 636 139.8
B 4 206 633245 4524.5 658 636 139.8
B 2 176 263311 1878.68 658 636 139.8
C 4 111 6594457 81963.09 271 269 80.5
C 15 230 2265852 28160.28 271 269 80.5
C 15 213 2109771 26220.26 271 269 80.5
D 15 106 3045953 18472.76 570 550 164.9
D 15 168 2121631 12866.02 570 550 164.9
D 2 249 655758 3974.35 570 550 164.9

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