ASTROSAT CZTI

Data Quality Report

Orbit 27805

Creation date: 2024-06-27T19:44:34.626569
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/AS1A10_016T01_9000004016_27805cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27805cztM0_level2_quad_clean.evt
Size (bytes)980,786,880149,863,680
Size935.4 MB 142.9 MB
Events in quadrant A6,466,685919,888
Events in quadrant B6,926,359930,384
Events in quadrant C6,675,823897,997
Events in quadrant D8,736,052872,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272550
B0285030
C0275750
D0346090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13285720.541965%
B132861030.775252%
C132861230.925787%
D132864543.417131%

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 15320 13285 1 1 0.01% 0.01%
B 15321 13286 11 11 0.07% 0.08%
C 15321 13286 3 3 0.02% 0.02%
D 15321 13286 371 371 2.42% 2.79%

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 22408 62.38 1675 1641 332.9
A 3 137 15416 41.38 1675 1641 332.9
A 0 226 14415 38.37 1675 1641 332.9
B 3 64 185768 592.28 1651 1608 310.9
B 10 245 117920 374.07 1651 1608 310.9
B 10 246 51204 159.5 1651 1608 310.9
C 14 238 260175 687.29 1608 1617 376.2
C 3 233 122322 320.85 1608 1617 376.2
C 2 16 15308 36.39 1608 1617 376.2
D 1 52 1642345 4277.12 1609 1567 383.6
D 11 248 677442 1761.85 1609 1567 383.6
D 2 250 232199 601.2 1609 1567 383.6

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