ASTROSAT CZTI

Data Quality Report

Orbit 39737

Creation date: 2024-06-27T22:08:23.503063
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_022T01_9000005494_39737cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39737cztM0_level2_quad_clean.evt
Size (bytes)348,050,88096,226,560
Size331.9 MB 91.8 MB
Events in quadrant A3,573,329650,788
Events in quadrant B2,593,660681,697
Events in quadrant C3,502,257634,987
Events in quadrant D2,819,390590,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138572
B0107771
C0137261
D0116461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50771953.840851%
B5077340.669687%
C5077611.201497%
D5077591.162104%

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 7229 5078 134 134 1.85% 2.64%
B 7229 5078 25 25 0.35% 0.49%
C 7229 5078 63 63 0.87% 1.24%
D 7229 5078 51 51 0.71% 1.00%

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 13 248 552839 4481.63 607 596 123.2
A 10 83 459445 3723.71 607 596 123.2
A 15 174 89628 722.52 607 596 123.2
B 5 255 91952 801.63 609 596 114.0
B 15 85 37970 327.95 609 596 114.0
B 5 172 27637 237.28 609 596 114.0
C 9 187 636569 4635.13 597 601 137.2
C 15 208 243118 1767.54 597 601 137.2
C 15 214 224874 1634.57 597 601 137.2
D 12 233 166236 1128.51 600 584 146.8
D 2 250 122693 831.87 600 584 146.8
D 12 218 75867 512.87 600 584 146.8

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