ASTROSAT CZTI

Data Quality Report

Orbit 18285

Creation date: 2024-06-27T17:47:51.997166
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/AS1A06_006T01_9000002720_18285cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18285cztM0_level2_quad_clean.evt
Size (bytes)753,056,64091,293,120
Size718.2 MB 87.1 MB
Events in quadrant A3,300,304620,059
Events in quadrant B3,543,511619,657
Events in quadrant C3,315,432608,476
Events in quadrant D12,183,581438,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142881
B0148771
C0143341
D0409511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68451081.577794%
B68461231.796670%
C68461211.767455%
D6846340749.766287%

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 7170 6847 2 2 0.03% 0.03%
B 7171 6848 12 12 0.17% 0.18%
C 7171 6848 5 5 0.07% 0.07%
D 7171 6848 2991 2991 41.71% 43.68%

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 15 174 56714 325.7 842 824 171.6
A 0 226 7542 39.15 842 824 171.6
A 12 194 6161 31.1 842 824 171.6
B 7 220 105318 647.86 838 817 161.3
B 0 197 54573 333.26 838 817 161.3
B 4 216 29058 175.08 838 817 161.3
C 14 238 122776 643.85 801 807 189.4
C 0 207 55083 286.51 801 807 189.4
C 8 128 5707 25.87 801 807 189.4
D 1 52 6459383 43411.29 606 587 148.8
D 7 238 2684307 18038.0 606 587 148.8
D 13 168 606424 4071.99 606 587 148.8

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