ASTROSAT CZTI

Data Quality Report

Orbit 26610

Creation date: 2024-06-27T19:30:59.164418
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/AS1A09_145T01_9000003848_26610cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26610cztM0_level2_quad_clean.evt
Size (bytes)656,277,120105,194,880
Size625.9 MB 100.3 MB
Events in quadrant A3,839,776685,729
Events in quadrant B4,533,131687,450
Events in quadrant C4,275,828658,024
Events in quadrant D6,714,055627,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160570
B0184060
C0172860
D0251490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7574861.135463%
B75741802.376551%
C75742353.102720%
D75746929.136520%

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 7929 7575 6 6 0.08% 0.08%
B 7929 7575 10 10 0.13% 0.13%
C 7929 7575 31 31 0.39% 0.41%
D 7929 7575 521 521 6.57% 6.88%

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 0 13 95226 483.08 970 952 195.2
A 13 254 13257 63.05 970 952 195.2
A 3 137 8653 39.46 970 952 195.2
B 0 189 569552 3089.26 962 938 184.1
B 3 64 106443 573.21 962 938 184.1
B 5 172 36079 190.92 962 938 184.1
C 15 208 275260 1262.12 923 930 217.4
C 3 233 251336 1152.05 923 930 217.4
C 14 238 148036 676.8 923 930 217.4
D 1 52 2401537 10760.24 911 887 223.1
D 2 250 374457 1674.42 911 887 223.1
D 7 80 331776 1483.12 911 887 223.1

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