ASTROSAT CZTI

Data Quality Report

Orbit 41406

Creation date: 2024-06-27T22:28:38.119178
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_035T01_9000005666_41406cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41406cztM0_level2_quad_clean.evt
Size (bytes)631,506,240151,099,200
Size602.3 MB 144.1 MB
Events in quadrant A5,400,5511,030,546
Events in quadrant B7,298,222928,247
Events in quadrant C5,019,6651,004,870
Events in quadrant D4,915,288948,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216603
B0280512
C0209532
D0212622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9565470.491375%
B9565126313.204391%
C95652382.488238%
D9565520.543649%

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 12999 9567 43 43 0.33% 0.45%
B 12999 9567 992 992 7.63% 10.37%
C 12999 9567 224 224 1.72% 2.34%
D 12999 9567 39 39 0.30% 0.41%

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 792506 3739.95 1046 1023 211.6
A 13 248 435958 2055.18 1046 1023 211.6
A 12 189 64127 298.18 1046 1023 211.6
B 5 255 3210748 16771.84 982 954 191.4
B 0 190 161830 840.61 982 954 191.4
B 0 229 49855 255.52 982 954 191.4
C 0 10 647633 2744.81 1008 1012 235.6
C 15 214 414611 1755.67 1008 1012 235.6
C 0 15 25164 102.52 1008 1012 235.6
D 2 120 257436 1008.04 1031 1000 254.4
D 13 249 181680 710.24 1031 1000 254.4
D 2 249 179096 700.09 1031 1000 254.4

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