ASTROSAT CZTI

Data Quality Report

Orbit 25620

Creation date: 2024-06-27T19:19:36.828216
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/AS1A09_081T01_9000003730_25620cztM0_level2.evt modeM0/AS1A09_081T01_9000003730_25620cztM0_level2_quad_clean.evt
Size (bytes)244,368,00038,004,480
Size233.0 MB 36.2 MB
Events in quadrant A1,910,217231,593
Events in quadrant B1,702,132245,026
Events in quadrant C1,682,337224,353
Events in quadrant D1,878,965213,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076830
B070760
C070390
D077710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3320220.662651%
B332050.150602%
C3320240.722892%
D3320250.753012%

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 3320 3320 4 4 0.12% 0.12%
B 3320 3320 1 1 0.03% 0.03%
C 3320 3320 0 0 0.00% 0.00%
D 3320 3320 21 21 0.63% 0.63%

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 0 13 181118 2107.18 425 418 85.8
A 8 192 71862 833.12 425 418 85.8
A 6 16 15379 174.46 425 418 85.8
B 12 111 9246 109.63 433 424 80.5
B 11 111 8232 97.03 433 424 80.5
B 14 111 7588 89.03 433 424 80.5
C 14 238 68800 718.89 410 413 95.1
C 0 10 6429 63.24 410 413 95.1
C 3 233 5813 56.77 410 413 95.1
D 8 195 158198 1584.01 405 394 99.6
D 1 52 71000 708.73 405 394 99.6
D 7 238 61742 615.8 405 394 99.6

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