ASTROSAT CZTI

Data Quality Report

Orbit 33697

Creation date: 2024-06-27T20:51:37.637969
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/AS1T04_090T01_9000004812_33697cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33697cztM0_level2_quad_clean.evt
Size (bytes)849,130,56047,355,840
Size809.8 MB 45.2 MB
Events in quadrant A14,271,05889,266
Events in quadrant B3,653,315321,542
Events in quadrant C3,449,108330,267
Events in quadrant D3,980,032314,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461753
B0142472
C0137632
D0157112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53715371100.000000%
B53712735.082852%
C5371951.768758%
D53711382.569354%

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 7372 5370 5322 5322 72.19% 99.11%
B 7373 5372 221 221 3.00% 4.11%
C 7373 5372 81 81 1.10% 1.51%
D 7373 5372 115 115 1.56% 2.14%

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 15 169 12897093 266511.41 242 238 48.4
A 15 237 347336 7172.72 242 238 48.4
A 14 4 81793 1685.32 242 238 48.4
B 5 172 814911 6309.43 692 677 129.1
B 15 85 65273 500.55 692 677 129.1
B 0 213 26513 200.2 692 677 129.1
C 0 10 248275 1569.33 695 703 157.8
C 3 233 239351 1512.76 695 703 157.8
C 15 214 230752 1458.25 695 703 157.8
D 8 195 446093 2420.35 691 679 184.0
D 2 249 323266 1752.91 691 679 184.0
D 2 250 179468 971.53 691 679 184.0

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