ASTROSAT CZTI

Data Quality Report

Orbit 40843

Creation date: 2024-06-27T22:21:13.836661
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/AS1A12_104T02_9000005572_40843cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40843cztM0_level2_quad_clean.evt
Size (bytes)435,559,68098,170,560
Size415.4 MB 93.6 MB
Events in quadrant A3,429,877661,246
Events in quadrant B2,855,822686,174
Events in quadrant C2,981,242650,349
Events in quadrant D6,374,246542,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138023
B0127482
C0127212
D0232522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6196711.145901%
B619680.129116%
C6196230.371207%
D619677012.427372%

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 8821 6198 37 37 0.42% 0.60%
B 8821 6198 1 1 0.01% 0.02%
C 8821 6198 18 18 0.20% 0.29%
D 8821 6198 839 839 9.51% 13.54%

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 538166 3825.47 680 665 140.5
A 13 248 170949 1211.93 680 665 140.5
A 12 189 70750 498.8 680 665 140.5
B 0 190 135852 1017.31 680 660 132.9
B 5 255 24587 180.05 680 660 132.9
B 0 230 24280 177.74 680 660 132.9
C 15 214 262966 1665.94 666 669 157.4
C 0 10 74146 466.68 666 669 157.4
C 14 254 35671 222.31 666 669 157.4
D 12 79 3162483 20133.33 642 624 157.0
D 2 249 317266 2016.24 642 624 157.0
D 13 249 180650 1146.33 642 624 157.0

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