ASTROSAT CZTI

Data Quality Report

Orbit 52574

Creation date: 2025-06-17T14:04:46.193706
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_9000006478_52574cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52574cztM0_level2_quad_clean.evt
Size (bytes)688,181,76094,348,800
Size656.3 MB 90.0 MB
Events in quadrant A3,255,657668,700
Events in quadrant B5,394,141687,315
Events in quadrant C3,712,159635,081
Events in quadrant D12,548,765359,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153610
B0210800
C0164740
D0423533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7266210.289017%
B72674135.683226%
C7267961.321040%
D7266318743.861822%

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 7266 7266 13 13 0.18% 0.18%
B 7267 7267 295 295 4.06% 4.06%
C 7267 7267 81 81 1.11% 1.11%
D 7266 7266 3095 3095 42.60% 42.60%

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 4 249 87196 455.91 751 729 189.7
A 5 243 49207 255.61 751 729 189.7
A 13 248 26924 138.12 751 729 189.7
B 10 254 907048 5840.57 728 702 155.2
B 10 44 766705 4936.19 728 702 155.2
B 7 0 267672 1720.37 728 702 155.2
C 12 249 476721 2385.17 719 713 199.6
C 15 248 152164 758.89 719 713 199.6
C 13 3 135937 677.58 719 713 199.6
D 6 42 3630667 22822.17 563 537 159.1
D 8 176 1849850 11626.4 563 537 159.1
D 15 125 1785639 11222.71 563 537 159.1

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