ASTROSAT CZTI

Data Quality Report

Orbit 23074

Creation date: 2024-06-27T18:49:25.156874
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_049T01_9000003408_23074cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23074cztM0_level2_quad_clean.evt
Size (bytes)488,471,04066,133,440
Size465.8 MB 63.1 MB
Events in quadrant A3,322,518393,350
Events in quadrant B3,342,036403,507
Events in quadrant C3,635,459384,264
Events in quadrant D4,059,238374,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136491
B0137031
C0146491
D0161231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401380.593657%
B6401550.859241%
C64012363.686924%
D64011482.312139%

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 7696 6402 6 6 0.08% 0.09%
B 7696 6402 8 8 0.10% 0.12%
C 7696 6402 57 57 0.74% 0.89%
D 7696 6402 120 120 1.56% 1.87%

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 6 16 93245 554.86 837 822 166.6
A 13 254 9603 52.72 837 822 166.6
A 0 226 7340 39.13 837 822 166.6
B 4 216 37543 231.97 839 819 158.3
B 12 111 19026 115.01 839 819 158.3
B 11 111 16912 101.65 839 819 158.3
C 0 10 326529 1753.68 800 807 185.7
C 14 238 129845 694.74 800 807 185.7
C 0 207 41099 216.93 800 807 185.7
D 1 52 358017 1817.99 814 794 196.5
D 1 239 325853 1654.3 814 794 196.5
D 12 227 214493 1087.56 814 794 196.5

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