ASTROSAT CZTI

Data Quality Report

Orbit 21438

Creation date: 2024-06-27T18:27:49.348924
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/AS1T03_140T01_9000003160_21438cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21438cztM0_level2_quad_clean.evt
Size (bytes)512,470,080111,332,160
Size488.7 MB 106.2 MB
Events in quadrant A3,250,029759,149
Events in quadrant B3,530,833755,784
Events in quadrant C3,224,711725,496
Events in quadrant D5,090,626695,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134852
B0143271
C0134211
D0193601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62451512.417934%
B62452143.426741%
C62461782.849824%
D62463535.651617%

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 7411 6246 0 0 0.00% 0.00%
B 7411 6246 59 59 0.80% 0.94%
C 7412 6247 0 0 0.00% 0.00%
D 7412 6247 237 237 3.20% 3.79%

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 9669 52.15 842 826 169.6
A 0 226 7269 38.0 842 826 169.6
A 3 137 6441 33.11 842 826 169.6
B 10 247 104572 664.11 824 806 156.2
B 0 189 50215 316.22 824 806 156.2
B 3 64 48515 305.34 824 806 156.2
C 14 238 127005 692.53 791 798 182.2
C 0 236 8359 41.49 791 798 182.2
C 13 61 5468 25.63 791 798 182.2
D 1 20 879467 4493.99 808 784 195.5
D 12 235 461628 2356.97 808 784 195.5
D 7 38 267014 1361.62 808 784 195.5

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