ASTROSAT CZTI

Data Quality Report

Orbit 37873

Creation date: 2024-06-27T21:45:33.497925
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_001T12_9000005352_37873cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37873cztM0_level2_quad_clean.evt
Size (bytes)424,889,28083,796,480
Size405.2 MB 79.9 MB
Events in quadrant A2,916,274546,862
Events in quadrant B3,220,232541,851
Events in quadrant C2,924,073533,989
Events in quadrant D3,418,605515,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122663
B0133582
C0122312
D0141132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5716270.472358%
B57161492.606718%
C5716390.682295%
D57161252.186844%

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 7057 5717 20 20 0.28% 0.35%
B 7057 5717 114 114 1.62% 1.99%
C 7057 5717 36 36 0.51% 0.63%
D 7057 5717 103 103 1.46% 1.80%

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 373372 2940.96 630 616 126.7
A 15 222 29933 231.3 630 616 126.7
A 9 143 29566 228.41 630 616 126.7
B 4 232 270673 2263.0 621 604 119.3
B 5 172 254798 2129.98 621 604 119.3
B 0 183 68429 568.33 621 604 119.3
C 15 214 241346 1672.72 614 618 143.9
C 0 10 152391 1054.61 614 618 143.9
C 14 67 80625 555.93 614 618 143.9
D 2 250 258528 1714.02 613 596 150.5
D 1 52 174193 1153.59 613 596 150.5
D 7 223 101141 668.14 613 596 150.5

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