ASTROSAT CZTI

Data Quality Report

Orbit 34372

Creation date: 2022-02-05T14:34:13.238738
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_082T12_9000004908_34372cztM0_level2.evt modeM0/AS1A05_082T12_9000004908_34372cztM0_level2_quad_clean.evt
Size (bytes)1,388,715,84099,659,520
Size1.3 GB 95.0 MB
Events in quadrant A4,540,721651,255
Events in quadrant B5,838,845656,637
Events in quadrant C11,795,057624,635
Events in quadrant D19,227,409406,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198423
B0235892
C0417492
D0639222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9762220.225364%
B97622332.386806%
C9762216622.188076%
D9762569758.358943%

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 11105 9763 6 6 0.05% 0.06%
B 11105 9763 138 138 1.24% 1.41%
C 11105 9763 1842 1842 16.59% 18.87%
D 11105 9763 5587 5587 50.31% 57.23%

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 9 143 64893 275.22 1144 1120 231.7
A 10 83 38495 161.3 1144 1120 231.7
A 13 254 18025 72.96 1144 1120 231.7
B 5 172 583964 2662.65 1127 1098 218.9
B 5 255 356917 1625.45 1127 1098 218.9
B 4 251 174204 790.78 1127 1098 218.9
C 4 254 6950088 28881.17 1035 1043 240.6
C 15 214 382230 1584.26 1035 1043 240.6
C 14 67 264944 1096.81 1035 1043 240.6
D 7 223 11291309 56198.81 823 798 200.9
D 12 235 2631090 13092.35 823 798 200.9
D 8 195 1216881 6053.08 823 798 200.9

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