ASTROSAT CZTI

Data Quality Report

Orbit 33250

Creation date: 2024-06-27T20:46:38.040844
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/AS1A11_046T01_9000004776_33250cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33250cztM0_level2_quad_clean.evt
Size (bytes)505,059,840114,266,880
Size481.7 MB 109.0 MB
Events in quadrant A3,806,210791,760
Events in quadrant B4,025,052776,968
Events in quadrant C2,871,514774,995
Events in quadrant D4,236,589748,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148223
B0153692
C0115512
D0163192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52613075.835393%
B52613857.318000%
C5261641.216499%
D5261651.235507%

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 7384 5262 205 205 2.78% 3.90%
B 7384 5262 274 274 3.71% 5.21%
C 7384 5262 55 55 0.74% 1.05%
D 7384 5262 48 48 0.65% 0.91%

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 1214210 9266.8 665 655 131.0
A 13 6 15064 110.03 665 655 131.0
A 13 254 9236 65.53 665 655 131.0
B 5 172 1066515 8931.04 646 633 119.3
B 4 170 154161 1286.41 646 633 119.3
B 0 219 96524 803.47 646 633 119.3
C 0 10 230985 1579.22 644 649 145.9
C 10 49 82090 558.37 644 649 145.9
C 3 233 13581 88.66 644 649 145.9
D 8 195 1052108 6535.18 659 642 160.9
D 2 250 236101 1463.45 659 642 160.9
D 2 249 95476 589.42 659 642 160.9

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