ASTROSAT CZTI

Data Quality Report

Orbit 20852

Creation date: 2024-06-27T18:20:11.502824
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/AS1A06_009T02_9000003076_20852cztM0_level2.evt modeM0/AS1A06_009T02_9000003076_20852cztM0_level2_quad_clean.evt
Size (bytes)678,467,52094,049,280
Size647.0 MB 89.7 MB
Events in quadrant A3,461,842615,591
Events in quadrant B3,645,671618,483
Events in quadrant C3,207,615605,563
Events in quadrant D9,768,205529,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147922
B0152672
C0139162
D0338125

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6873981.425869%
B6873861.251273%
C6873400.581987%
D6873147521.460789%

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 7748 6873 70 70 0.90% 1.02%
B 7748 6873 32 32 0.41% 0.47%
C 7747 6873 0 0 0.00% 0.00%
D 7748 6874 1533 1533 19.79% 22.30%

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 5 16 337380 2041.52 808 792 164.9
A 5 98 15110 86.84 808 792 164.9
A 0 226 6961 37.42 808 792 164.9
B 7 220 205864 1314.09 812 792 156.1
B 0 189 62358 394.51 812 792 156.1
B 0 230 43094 271.07 812 792 156.1
C 14 238 120703 655.08 778 783 183.1
C 3 233 21569 113.55 778 783 183.1
C 7 247 12074 61.68 778 783 183.1
D 1 239 2386199 13795.77 708 686 172.9
D 1 52 2039650 11791.63 708 686 172.9
D 1 20 1708081 9874.12 708 686 172.9

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