ASTROSAT CZTI

Data Quality Report

Orbit 08793

Creation date: 2024-06-27T15:37:18.339344
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/AS1G07_010T03_9000001224_08793cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08793cztM0_level2_quad_clean.evt
Size (bytes)271,788,48038,557,440
Size259.2 MB 36.8 MB
Events in quadrant A2,000,027222,460
Events in quadrant B1,962,836225,529
Events in quadrant C1,771,609224,941
Events in quadrant D2,219,385208,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0842
C0840
D0844

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08963176
B08789132
C08475150
D09734173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4044411.013848%
B4065791.943419%
C4056210.517751%
D40641433.518701%

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 4410 4121 6 6 0.14% 0.15%
B 4410 4127 5 5 0.11% 0.12%
C 4410 4128 0 0 0.00% 0.00%
D 4410 4121 66 66 1.50% 1.60%

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 13 251 174309 1808.2 461 450 96.2
A 8 5 28562 292.38 461 450 96.2
A 15 223 7367 71.94 461 450 96.2
B 4 173 118317 1269.94 467 454 92.8
B 4 80 24821 262.55 467 454 92.8
B 12 111 10642 109.77 467 454 92.8
C 14 234 10968 98.79 451 451 106.5
C 13 61 3394 27.64 451 451 106.5
C 9 68 1233 7.35 451 451 106.5
D 2 16 362568 3233.89 436 425 112.0
D 2 152 103035 916.29 436 425 112.0
D 2 14 52259 462.87 436 425 112.0

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