ASTROSAT CZTI

Data Quality Report

Orbit 30918

Creation date: 2024-06-27T20:21:10.129300
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_007T01_9000004470_30918cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30918cztM0_level2_quad_clean.evt
Size (bytes)627,485,76086,935,680
Size598.4 MB 82.9 MB
Events in quadrant A3,191,617582,606
Events in quadrant B7,072,428567,257
Events in quadrant C3,555,681537,068
Events in quadrant D4,771,564519,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131011
B0250941
C0143901
D0184591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097390.639659%
B609868911.298786%
C60975168.463179%
D60972744.494013%

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 7417 6098 7 7 0.09% 0.11%
B 7418 6098 373 373 5.03% 6.12%
C 7417 6097 9 9 0.12% 0.15%
D 7417 6097 201 201 2.71% 3.30%

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 63377 388.46 808 795 161.1
A 15 174 12712 73.97 808 795 161.1
A 13 254 11296 65.18 808 795 161.1
B 6 36 1942148 13143.6 797 780 147.7
B 6 159 1811120 12256.51 797 780 147.7
B 0 190 55892 373.12 797 780 147.7
C 14 238 244303 1394.69 752 758 174.6
C 14 254 169384 965.65 752 758 174.6
C 0 10 118525 674.41 752 758 174.6
D 8 195 706739 3976.97 753 734 177.5
D 12 218 507863 2856.69 753 734 177.5
D 1 52 248683 1396.71 753 734 177.5

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