ASTROSAT CZTI

Data Quality Report

Orbit 11779

Creation date: 2024-06-27T16:18:11.337040
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/AS1C03_024T01_9000001742_11779cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11779cztM0_level2_quad_clean.evt
Size (bytes)659,180,16076,268,160
Size628.6 MB 72.7 MB
Events in quadrant A3,702,269481,051
Events in quadrant B8,743,803435,987
Events in quadrant C3,102,466483,353
Events in quadrant D3,965,200444,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153243
B0307772
C0136192
D0162282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6641530.798073%
B6641164124.710134%
C6641420.632435%
D66412674.020479%

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 8887 6644 1 1 0.01% 0.02%
B 8887 6644 1208 1208 13.59% 18.18%
C 8887 6644 3 3 0.03% 0.05%
D 8887 6644 190 190 2.14% 2.86%

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 8 15 378617 2315.11 804 787 163.2
A 1 162 91368 555.02 804 787 163.2
A 1 178 46089 277.58 804 787 163.2
B 10 16 5037374 34591.58 769 751 145.6
B 4 239 442686 3035.21 769 751 145.6
B 3 64 81044 551.45 769 751 145.6
C 1 3 17316 90.02 790 797 183.5
C 13 61 5710 26.77 790 797 183.5
C 14 234 2816 11.0 790 797 183.5
D 1 52 446982 2398.32 767 746 186.1
D 13 104 223007 1194.55 767 746 186.1
D 13 137 124530 665.28 767 746 186.1

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