ASTROSAT CZTI

Data Quality Report

Orbit 38466

Creation date: 2024-06-27T21:53:08.741985
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/AS1A12_018T01_9000005386_38466cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38466cztM0_level2_quad_clean.evt
Size (bytes)443,471,04088,853,760
Size422.9 MB 84.7 MB
Events in quadrant A3,004,141632,363
Events in quadrant B2,934,053641,223
Events in quadrant C2,725,074612,642
Events in quadrant D7,314,687410,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123873
B0124582
C0116242
D0255552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5626390.693210%
B5626681.208674%
C5626270.479915%
D5626172430.643441%

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 7059 5627 30 30 0.42% 0.53%
B 7059 5627 49 49 0.69% 0.87%
C 7059 5627 22 22 0.31% 0.39%
D 7059 5626 1658 1658 23.49% 29.47%

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 10 83 409392 3233.34 621 608 126.4
A 9 143 94169 740.03 621 608 126.4
A 10 248 36076 280.54 621 608 126.4
B 5 184 324907 2730.99 615 597 118.8
B 5 200 32680 270.17 615 597 118.8
B 0 229 30402 250.99 615 597 118.8
C 15 214 235076 1653.13 606 610 141.8
C 14 254 85093 595.66 606 610 141.8
C 0 10 30606 211.49 606 610 141.8
D 12 227 4497835 36675.34 503 489 122.6
D 12 235 433571 3531.73 503 489 122.6
D 2 16 128075 1040.45 503 489 122.6

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