ASTROSAT CZTI

Data Quality Report

Orbit 21109

Creation date: 2024-06-27T18:23:41.043768
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/AS1A05_163T01_9000003118_21109cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21109cztM0_level2_quad_clean.evt
Size (bytes)707,152,32098,084,160
Size674.4 MB 93.5 MB
Events in quadrant A4,359,629606,309
Events in quadrant B4,631,421607,188
Events in quadrant C4,288,347588,066
Events in quadrant D7,543,553560,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185592
B0192282
C0183053
D0288802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87593614.121475%
B87604695.353881%
C87593724.247060%
D87593724.247060%

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 9179 8761 3 3 0.03% 0.03%
B 9180 8761 41 41 0.45% 0.47%
C 9179 8761 0 0 0.00% 0.00%
D 9179 8761 36 36 0.39% 0.41%

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 15 192 125734 556.03 1097 1067 224.2
A 13 254 13971 57.55 1097 1067 224.2
A 3 137 9642 38.25 1097 1067 224.2
B 7 220 224151 1041.3 1089 1055 214.2
B 3 64 78658 362.21 1089 1055 214.2
B 12 111 26446 118.51 1089 1055 214.2
C 14 238 160002 638.64 1054 1062 248.9
C 7 221 13222 48.86 1054 1062 248.9
C 13 61 7533 26.0 1054 1062 248.9
D 1 20 3277335 12704.42 1060 1029 257.9
D 13 153 74107 283.37 1060 1029 257.9
D 9 1 55850 212.58 1060 1029 257.9

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