ASTROSAT CZTI

Data Quality Report

Orbit 10773

Creation date: 2024-06-27T16:03:41.471386
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/AS1G07_032T01_9000001554_10773cztM0_level2.evt modeM0/AS1G07_032T01_9000001554_10773cztM0_level2_quad_clean.evt
Size (bytes)477,504,00069,310,080
Size455.4 MB 66.1 MB
Events in quadrant A3,701,205418,888
Events in quadrant B4,157,940436,118
Events in quadrant C2,546,870440,455
Events in quadrant D3,675,570412,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01268
B012614
C012618
D012618

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091
B091
C091
D092

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169332146
B0177871722
C0127471095
D0162441720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55031552.816645%
B56025399.621564%
C5659260.459445%
D55651192.138365%

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 7084 5979 79 79 1.12% 1.32%
B 7086 6066 211 211 2.98% 3.48%
C 7086 6085 7 7 0.10% 0.12%
D 7086 6027 75 75 1.06% 1.24%

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 15 239 1050141 8033.15 643 631 130.6
A 15 223 130449 993.65 643 631 130.6
A 15 174 8934 63.55 643 631 130.6
B 0 85 1018525 8196.8 646 630 124.2
B 4 239 551367 4434.92 646 630 124.2
B 0 214 28691 225.97 646 630 124.2
C 14 234 24765 159.86 647 651 150.8
C 13 61 4819 27.63 647 651 150.8
C 5 207 1811 7.69 647 651 150.8
D 1 52 383452 2515.91 627 610 152.2
D 13 104 376345 2469.2 627 610 152.2
D 8 195 222185 1456.12 627 610 152.2

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