ASTROSAT CZTI

Data Quality Report

Orbit 42454

Creation date: 2024-06-27T22:40:22.330309
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_42454cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42454cztM0_level2_quad_clean.evt
Size (bytes)1,185,713,280226,416,960
Size1.1 GB 215.9 MB
Events in quadrant A8,155,3911,609,456
Events in quadrant B12,950,4421,277,499
Events in quadrant C7,761,9141,587,975
Events in quadrant D13,832,0271,318,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341274
B0503644
C0334325
D0519654

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15381710.461608%
B15381323321.019440%
C15380710.461638%
D15380196712.789337%

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 19711 15384 35 35 0.18% 0.23%
B 19711 15382 2579 2579 13.08% 16.77%
C 19710 15383 65 65 0.33% 0.42%
D 19710 15383 1885 1885 9.56% 12.25%

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 1477834 4396.43 1634 1598 335.8
A 14 223 194152 573.45 1634 1598 335.8
A 12 189 83165 242.92 1634 1598 335.8
B 0 186 7089213 26313.98 1402 1361 269.4
B 3 112 102071 373.89 1402 1361 269.4
B 5 172 89660 327.81 1402 1361 269.4
C 10 34 676046 1824.36 1590 1599 369.7
C 15 214 631570 1704.05 1590 1599 369.7
C 15 111 150447 402.63 1590 1599 369.7
D 1 52 4372865 11731.29 1532 1492 372.6
D 13 249 828604 2219.69 1532 1492 372.6
D 2 16 672519 1800.81 1532 1492 372.6

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