ASTROSAT CZTI

Data Quality Report

Orbit 50534

Creation date: 2025-01-31T04:05:25.463022
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/AS1T05_239T01_9000006444_50534cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50534cztM0_level2_quad_clean.evt
Size (bytes)599,391,36093,977,280
Size571.6 MB 89.6 MB
Events in quadrant A4,248,595639,372
Events in quadrant B7,545,488551,879
Events in quadrant C5,003,105611,268
Events in quadrant D4,862,413568,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170782
B0271403
C0195382
D0192872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68071832.688409%
B6806161423.714370%
C68062904.260946%
D68063284.819277%

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 7877 6808 118 118 1.50% 1.73%
B 7876 6807 1123 1123 14.26% 16.50%
C 7876 6807 232 232 2.95% 3.41%
D 7876 6807 239 239 3.03% 3.51%

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 3 234747 1287.93 726 708 181.7
A 5 240 127624 698.43 726 708 181.7
A 4 249 122831 672.05 726 708 181.7
B 7 0 3480486 24411.76 665 643 142.5
B 4 170 1089417 7637.96 665 643 142.5
B 0 229 68688 477.35 665 643 142.5
C 12 252 379220 1901.7 714 708 199.0
C 13 3 299579 1501.57 714 708 199.0
C 15 232 237837 1191.37 714 708 199.0
D 8 246 508138 2611.08 700 678 194.3
D 15 79 288888 1482.95 700 678 194.3
D 6 42 237710 1219.62 700 678 194.3

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