ASTROSAT CZTI

Data Quality Report

Orbit 39289

Creation date: 2024-06-27T22:02:45.061621
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_025T12_9000005458_39289cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39289cztM0_level2_quad_clean.evt
Size (bytes)559,172,16071,876,160
Size533.3 MB 68.5 MB
Events in quadrant A2,748,243598,370
Events in quadrant B2,430,271611,504
Events in quadrant C2,707,696580,219
Events in quadrant D12,430,23542,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108442
B0103091
C0107231
D0403401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4904130.265090%
B4904450.917618%
C4904430.876835%
D4904461394.066069%

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 7027 4905 5 5 0.07% 0.10%
B 7027 4905 33 33 0.47% 0.67%
C 7027 4905 39 39 0.56% 0.80%
D 7027 4905 3954 3954 56.27% 80.61%

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 402495 3411.32 585 574 117.8
A 15 222 77280 651.05 585 574 117.8
A 13 248 6373 49.22 585 574 117.8
B 5 172 150444 1354.57 573 558 110.7
B 5 255 17854 156.31 573 558 110.7
B 12 111 13402 116.08 573 558 110.7
C 9 187 259101 1955.77 569 573 132.2
C 15 214 208197 1570.68 569 573 132.2
C 0 10 16161 117.92 569 573 132.2
D 12 235 11091451 152813.82 288 280 72.6
D 5 222 69413 952.51 288 280 72.6
D 14 52 46808 641.06 288 280 72.6

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