ASTROSAT CZTI

Data Quality Report

Orbit 14750

Creation date: 2024-06-27T16:59:03.505435
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/AS1A04_203T01_9000002180_14750cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14750cztM0_level2_quad_clean.evt
Size (bytes)576,360,00063,262,080
Size549.7 MB 60.3 MB
Events in quadrant A6,941,880372,709
Events in quadrant B3,353,586378,870
Events in quadrant C3,608,604372,844
Events in quadrant D3,141,036367,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248002
B0135531
C0145471
D0129161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6050118719.619835%
B60501432.363636%
C60501081.785124%
D6050941.553719%

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 7325 6050 818 818 11.17% 13.52%
B 7326 6051 7 7 0.10% 0.12%
C 7326 6051 13 13 0.18% 0.21%
D 7326 6051 5 5 0.07% 0.08%

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 8 15 3786798 23958.05 786 771 158.0
A 3 1 65783 411.4 786 771 158.0
A 12 189 44173 274.65 786 771 158.0
B 4 142 84516 541.97 818 799 154.5
B 0 205 24842 155.65 818 799 154.5
B 0 228 21326 132.89 818 799 154.5
C 3 233 354239 1938.8 794 799 182.3
C 4 254 116074 632.34 794 799 182.3
C 0 207 36043 193.33 794 799 182.3
D 2 234 38613 196.11 804 783 192.9
D 2 120 26183 131.67 804 783 192.9
D 13 172 17640 87.39 804 783 192.9

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