ASTROSAT CZTI

Data Quality Report

Orbit 22528

Creation date: 2024-06-27T18:42:22.873621
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/AS1A08_003T01_9000003342_22528cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22528cztM0_level2_quad_clean.evt
Size (bytes)547,842,24089,648,640
Size522.5 MB 85.5 MB
Events in quadrant A3,172,314566,197
Events in quadrant B3,336,452577,283
Events in quadrant C3,231,467559,675
Events in quadrant D6,382,778530,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141681
B0145611
C0142502
D0239541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6906450.651607%
B6906821.187373%
C6906921.332175%
D6906105515.276571%

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 7271 6907 0 0 0.00% 0.00%
B 7271 6906 8 8 0.11% 0.12%
C 7271 6906 0 0 0.00% 0.00%
D 7271 6906 872 872 11.99% 12.63%

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 11186 61.59 822 804 168.6
A 0 226 7146 37.63 822 804 168.6
A 3 137 7117 37.45 822 804 168.6
B 15 33 40295 246.33 822 801 160.3
B 0 197 30386 184.53 822 801 160.3
B 5 172 24012 144.77 822 801 160.3
C 14 238 123268 651.69 791 797 187.9
C 8 128 8838 42.79 791 797 187.9
C 13 61 5499 25.02 791 797 187.9
D 1 52 3455002 19012.77 736 714 181.7
D 13 249 81041 442.13 736 714 181.7
D 5 32 40263 217.68 736 714 181.7

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