ASTROSAT CZTI

Data Quality Report

Orbit 42460

Creation date: 2024-06-27T22:40:26.849064
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/AS1C07_001T10_9000005806_42460cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42460cztM0_level2_quad_clean.evt
Size (bytes)336,556,80085,570,560
Size321.0 MB 81.6 MB
Events in quadrant A2,841,725597,460
Events in quadrant B3,618,780561,409
Events in quadrant C2,316,752563,777
Events in quadrant D3,296,632522,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113602
B0140964
C099492
D0130292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932150.304136%
B49313597.280470%
C493130.060840%
D49311472.981140%

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 7055 4933 2 2 0.03% 0.04%
B 7054 4932 302 302 4.28% 6.12%
C 7054 4932 1 1 0.01% 0.02%
D 7054 4932 132 132 1.87% 2.68%

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 578426 5098.69 553 542 113.3
A 12 189 93733 822.23 553 542 113.3
A 13 6 15069 128.17 553 542 113.3
B 0 186 1329317 13138.3 529 516 101.1
B 5 172 50674 495.93 529 516 101.1
B 15 35 47647 466.0 529 516 101.1
C 15 214 210624 1714.42 529 532 122.5
C 15 111 8546 65.4 529 532 122.5
C 14 254 8508 65.09 529 532 122.5
D 12 233 439334 3411.14 533 518 128.6
D 2 16 216129 1676.05 533 518 128.6
D 10 118 145463 1126.73 533 518 128.6

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