ASTROSAT CZTI

Data Quality Report

Orbit 07568

Creation date: 2024-06-27T15:21:07.405132
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/AS1A02_024T01_9000001044_07568cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07568cztM0_level2_quad_clean.evt
Size (bytes)529,963,20064,342,080
Size505.4 MB 61.4 MB
Events in quadrant A3,576,739378,504
Events in quadrant B3,424,581382,978
Events in quadrant C4,484,504371,832
Events in quadrant D4,124,375361,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146943
B0141602
C0176062
D0166122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64891882.897211%
B6489630.970874%
C6489600.924642%
D64891812.789336%

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 7759 6489 93 93 1.20% 1.43%
B 7759 6489 1 1 0.01% 0.02%
C 7759 6489 3 3 0.04% 0.05%
D 7759 6489 89 89 1.15% 1.37%

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 0 128 301520 1760.24 847 828 170.8
A 3 1 8642 45.74 847 828 170.8
A 0 226 8132 42.75 847 828 170.8
B 11 51 79807 494.19 849 832 159.8
B 0 214 38785 237.49 849 832 159.8
B 12 111 16528 98.22 849 832 159.8
C 9 68 1205685 6342.59 824 828 190.0
C 8 229 44722 231.06 824 828 190.0
C 1 16 20196 101.95 824 828 190.0
D 2 244 503097 2461.34 831 807 204.1
D 2 152 216431 1056.61 831 807 204.1
D 5 233 150804 735.02 831 807 204.1

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