ASTROSAT CZTI

Data Quality Report

Orbit 30905

Creation date: 2024-06-27T20:21:00.682272
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/AS1C06_004T01_9000004466_30905cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30905cztM0_level2_quad_clean.evt
Size (bytes)541,091,520110,733,120
Size516.0 MB 105.6 MB
Events in quadrant A3,106,617744,653
Events in quadrant B5,375,432756,819
Events in quadrant C3,677,447703,677
Events in quadrant D3,804,094712,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131922
B0200772
C0148662
D0153422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243390.624700%
B62441983.171044%
C624465510.490070%
D6244520.832799%

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 7558 6244 4 4 0.05% 0.06%
B 7559 6244 18 18 0.24% 0.29%
C 7558 6243 27 27 0.36% 0.43%
D 7559 6245 23 23 0.30% 0.37%

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 0 13 13380 79.8 798 784 157.8
A 13 254 11179 65.86 798 784 157.8
A 3 137 7481 42.43 798 784 157.8
B 6 159 1850143 12673.17 802 784 145.9
B 6 36 139812 952.72 802 784 145.9
B 0 190 123088 838.12 802 784 145.9
C 14 238 264877 1548.61 743 749 170.6
C 14 254 204741 1196.02 743 749 170.6
C 0 10 196108 1145.41 743 749 170.6
D 8 195 599646 3297.59 770 753 181.6
D 1 52 62904 342.21 770 753 181.6
D 12 233 56604 307.52 770 753 181.6

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