ASTROSAT CZTI

Data Quality Report

Orbit 46851

Creation date: 2024-06-27T23:28:29.265282
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_053T01_9000006274_46851cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46851cztM0_level2_quad_clean.evt
Size (bytes)477,282,240106,479,360
Size455.2 MB 101.5 MB
Events in quadrant A6,117,661717,989
Events in quadrant B3,429,666742,392
Events in quadrant C3,089,627708,306
Events in quadrant D4,554,618627,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223321
B0142651
C0135011
D0177031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61332494.060003%
B61331412.299038%
C6134721.173785%
D61343665.966743%

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 7338 6134 42 42 0.57% 0.68%
B 7338 6134 37 37 0.50% 0.60%
C 7339 6135 25 25 0.34% 0.41%
D 7339 6135 244 244 3.32% 3.98%

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 3250350 22084.16 716 702 147.1
A 9 191 39471 263.47 716 702 147.1
A 7 3 33542 223.18 716 702 147.1
B 3 112 365132 2645.5 712 691 137.8
B 0 200 109136 787.21 712 691 137.8
B 5 172 42167 301.08 712 691 137.8
C 14 254 245055 1493.35 696 701 163.6
C 1 241 103097 625.78 696 701 163.6
C 0 207 17318 101.55 696 701 163.6
D 13 249 609454 3636.67 681 663 167.4
D 1 52 545243 3253.1 681 663 167.4
D 10 181 352538 2101.96 681 663 167.4

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