ASTROSAT CZTI

Data Quality Report

Orbit 38823

Creation date: 2024-06-27T21:56:52.750810
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_061T07_9000005402_38823cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38823cztM0_level2_quad_clean.evt
Size (bytes)92,090,88027,947,520
Size87.8 MB 26.7 MB
Events in quadrant A838,786190,443
Events in quadrant B695,928199,203
Events in quadrant C739,405182,731
Events in quadrant D1,019,019166,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034291
B029751
C030981
D040871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145040.275862%
B145020.137931%
C145040.275862%
D145020.137931%

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 1450 1450 2 2 0.14% 0.14%
B 1450 1450 0 0 0.00% 0.00%
C 1450 1450 5 5 0.34% 0.34%
D 1450 1450 1 1 0.07% 0.07%

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 142801 4061.05 166 164 35.1
A 13 248 25263 714.6 166 164 35.1
A 9 143 18644 526.15 166 164 35.1
B 0 230 14396 409.21 169 165 34.8
B 4 81 6928 194.47 169 165 34.8
B 12 111 3888 107.05 169 165 34.8
C 15 214 66409 1716.98 160 161 38.6
C 1 23 31951 823.91 160 161 38.6
C 15 208 10085 257.2 160 161 38.6
D 2 16 201664 5136.73 156 151 39.2
D 12 235 130716 3328.21 156 151 39.2
D 12 227 34287 870.15 156 151 39.2

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