ASTROSAT CZTI

Data Quality Report

Orbit 10479

Creation date: 2024-06-27T15:59:58.504299
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/AS1A03_084T01_9000001514_10479cztM0_level2.evt modeM0/AS1A03_084T01_9000001514_10479cztM0_level2_quad_clean.evt
Size (bytes)105,776,6408,841,600
Size100.9 MB 8.4 MB
Events in quadrant A253,30630,925
Events in quadrant B902,70642,541
Events in quadrant C855,04042,085
Events in quadrant D1,092,99845,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08444
B08446
C08444
D08142

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02772626763
B092285587
C086965179
D096515277

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02310
B02613
C02613
D02310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3713810.242588%
B1645301.823708%
C1677281.669648%
D1894361.900739%

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 3249 433 2 2 0.06% 0.46%
B 3329 1910 0 0 0.00% 0.00%
C 3328 1912 0 0 0.00% 0.00%
D 3329 1980 5 5 0.15% 0.25%

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 15 239 58029 4739.4 48 47 12.2
A 3 80 4607 372.73 48 47 12.2
A 13 251 1884 150.15 48 47 12.2
B 11 51 14158 315.0 222 217 44.3
B 4 239 8768 193.21 222 217 44.3
B 0 187 4966 107.3 222 217 44.3
C 13 61 1639 27.29 219 219 52.0
C 14 67 561 6.57 219 219 52.0
C 3 202 520 5.78 219 219 52.0
D 8 195 99672 1700.91 239 231 58.5
D 1 20 26752 453.63 239 231 58.5
D 1 52 19440 328.56 239 231 58.5

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