ASTROSAT CZTI

Data Quality Report

Orbit 50701

Creation date: 2025-02-11T16:40:28.369995
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_241T01_9000006446_50701cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50701cztM0_level2_quad_clean.evt
Size (bytes)702,083,520111,556,800
Size669.6 MB 106.4 MB
Events in quadrant A7,727,455688,921
Events in quadrant B4,650,802794,732
Events in quadrant C6,943,998683,403
Events in quadrant D6,043,519651,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283350
B0196080
C0262800
D0237120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A804784710.525662%
B80483083.827038%
C80488009.940358%
D80485176.423956%

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 8047 8047 986 986 12.25% 12.25%
B 8048 8048 201 201 2.50% 2.50%
C 8048 8048 640 640 7.95% 7.95%
D 8048 8048 488 488 6.06% 6.06%

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 12 80 2793225 13503.37 832 811 206.8
A 4 3 355399 1714.69 832 811 206.8
A 4 249 215868 1039.96 832 811 206.8
B 0 229 549504 3062.81 839 808 179.1
B 4 170 309288 1721.93 839 808 179.1
B 0 213 60463 332.99 839 808 179.1
C 5 10 1403432 6253.81 806 800 224.3
C 4 5 497972 2216.71 806 800 224.3
C 0 209 309934 1378.31 806 800 224.3
D 2 249 578402 2596.91 804 777 222.4
D 15 108 576776 2589.6 804 777 222.4
D 1 47 343964 1542.91 804 777 222.4

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