ASTROSAT CZTI

Data Quality Report

Orbit 45290

Creation date: 2024-06-27T23:12:01.169764
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/AS1A13_024T03_9000006064_45290cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45290cztM0_level2_quad_clean.evt
Size (bytes)615,219,840113,722,560
Size586.7 MB 108.5 MB
Events in quadrant A5,987,821781,915
Events in quadrant B3,624,140816,672
Events in quadrant C3,810,396766,863
Events in quadrant D8,777,452562,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230270
B0157870
C0167320
D0313480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73991121.513718%
B7400470.635135%
C74001101.486486%
D7400166122.445946%

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 7399 7399 81 81 1.09% 1.09%
B 7400 7400 30 30 0.41% 0.41%
C 7400 7400 93 93 1.26% 1.26%
D 7400 7400 1712 1712 23.14% 23.14%

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 10 83 2550389 15125.06 809 792 168.6
A 13 248 245756 1453.21 809 792 168.6
A 15 174 51358 299.97 809 792 168.6
B 5 32 83350 515.51 812 787 160.2
B 5 172 66039 407.43 812 787 160.2
B 3 112 65298 402.8 812 787 160.2
C 14 254 528572 2834.86 788 791 186.2
C 3 233 119762 639.03 788 791 186.2
C 2 14 56378 298.57 788 791 186.2
D 2 249 2893660 15922.84 719 696 181.7
D 5 222 2247492 12366.34 719 696 181.7
D 13 249 559332 3074.73 719 696 181.7

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