ASTROSAT CZTI

Data Quality Report

Orbit 20280

Creation date: 2024-06-27T18:14:05.568891
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/AS1A06_009T02_9000003006_20280cztM0_level2.evt modeM0/AS1A06_009T02_9000003006_20280cztM0_level2_quad_clean.evt
Size (bytes)199,036,80021,021,120
Size189.8 MB 20.0 MB
Events in quadrant A1,387,495109,195
Events in quadrant B1,422,020114,184
Events in quadrant C1,448,545109,599
Events in quadrant D1,580,065105,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057101
B057911
C058321
D063821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276020.072464%
B276040.144928%
C2760190.688406%
D2760260.942029%

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 2760 2760 0 0 0.00% 0.00%
B 2760 2760 0 0 0.00% 0.00%
C 2760 2760 0 0 0.00% 0.00%
D 2760 2760 16 16 0.58% 0.58%

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 4 2 11770 158.44 356 350 72.1
A 0 226 2957 36.17 356 350 72.1
A 14 238 2881 35.12 356 350 72.1
B 12 111 7786 109.71 361 353 67.7
B 11 111 6835 95.67 361 353 67.7
B 14 111 6255 87.11 361 353 67.7
C 14 238 56773 682.14 355 358 82.7
C 3 233 5390 60.84 355 358 82.7
C 13 61 2496 25.85 355 358 82.7
D 1 52 239891 2800.14 352 342 85.5
D 2 234 14991 171.24 352 342 85.5
D 13 138 4431 47.8 352 342 85.5

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