ASTROSAT CZTI

Data Quality Report

Orbit 26517

Creation date: 2024-06-27T19:29:57.719976
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/AS1C05_019T04_9000003838_26517cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26517cztM0_level2_quad_clean.evt
Size (bytes)747,679,680114,301,440
Size713.0 MB 109.0 MB
Events in quadrant A3,177,535860,180
Events in quadrant B3,852,460854,879
Events in quadrant C3,385,194832,575
Events in quadrant D11,815,797486,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134090
B0155230
C0139620
D0393010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6109550.900311%
B61101031.685761%
C61101021.669394%
D6110375061.374795%

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 7444 6109 0 0 0.00% 0.00%
B 7445 6111 26 26 0.35% 0.43%
C 7445 6111 5 5 0.07% 0.08%
D 7444 6109 3461 3461 46.49% 56.65%

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 13 254 10767 62.26 821 807 160.0
A 0 226 7292 40.54 821 807 160.0
A 0 13 7055 39.06 821 807 160.0
B 0 189 435522 2955.15 809 790 147.1
B 5 172 95986 647.11 809 790 147.1
B 0 245 58406 391.65 809 790 147.1
C 14 238 128406 702.01 796 803 181.8
C 3 233 118957 650.03 796 803 181.8
C 0 207 25287 134.7 796 803 181.8
D 7 80 7339087 54566.56 556 543 134.5
D 1 52 2256038 16770.98 556 543 134.5
D 12 233 70120 517.34 556 543 134.5

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