ASTROSAT CZTI

Data Quality Report

Orbit 25187

Creation date: 2024-06-27T19:14:51.388525
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/AS1A07_027T01_9000003690_25187cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25187cztM0_level2_quad_clean.evt
Size (bytes)514,604,16072,875,520
Size490.8 MB 69.5 MB
Events in quadrant A3,303,225455,272
Events in quadrant B3,395,809460,802
Events in quadrant C3,455,277429,557
Events in quadrant D5,004,287422,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134840
B0138490
C0139280
D0190900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293470.746862%
B6293741.175910%
C6293881.398379%
D62933946.260925%

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 7608 6293 0 0 0.00% 0.00%
B 7608 6294 1 1 0.01% 0.02%
C 7608 6293 1 1 0.01% 0.02%
D 7608 6294 375 375 4.93% 5.96%

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 13 254 9492 51.03 857 843 169.5
A 0 226 7480 39.16 857 843 169.5
A 3 137 7105 36.95 857 843 169.5
B 4 80 22475 138.74 847 828 156.0
B 3 64 22327 137.79 847 828 156.0
B 0 189 20701 127.37 847 828 156.0
C 7 247 133558 721.96 803 811 183.9
C 14 238 132629 716.91 803 811 183.9
C 8 208 40661 216.73 803 811 183.9
D 1 52 729681 3818.83 806 784 190.9
D 12 233 622274 3256.1 806 784 190.9
D 12 235 253630 1324.71 806 784 190.9

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