ASTROSAT CZTI

Data Quality Report

Orbit 42426

Creation date: 2024-06-27T22:39:54.925357
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_101T04_9000005804_42426cztM0_level2.fits modeM0/AS1A12_101T04_9000005804_42426cztM0_level2_quad_clean.evt
Size (bytes)259,220,16066,219,840
Size247.2 MB 63.2 MB
Events in quadrant A2,096,422447,138
Events in quadrant B1,792,114456,514
Events in quadrant C1,904,833428,409
Events in quadrant D3,479,208381,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087061
B083551
C083771
D0132671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A413480.193517%
B4134130.314465%
C413460.145138%
D41342656.410256%

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 4134 4134 2 2 0.05% 0.05%
B 4134 4134 6 6 0.15% 0.15%
C 4134 4134 2 2 0.05% 0.05%
D 4134 4134 252 252 6.10% 6.10%

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 339102 3619.22 451 442 93.6
A 13 254 6681 66.68 451 442 93.6
A 7 3 6084 60.3 451 442 93.6
B 5 172 26035 291.65 445 432 87.8
B 5 255 15216 168.41 445 432 87.8
B 12 111 11406 125.01 445 432 87.8
C 15 214 171025 1648.34 433 436 103.5
C 12 249 18627 175.77 433 436 103.5
C 15 111 17333 163.27 433 436 103.5
D 12 33 1147011 10802.39 427 415 106.1
D 2 16 361423 3401.15 427 415 106.1
D 1 52 148227 1392.58 427 415 106.1

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