ASTROSAT CZTI

Data Quality Report

Orbit 04792

Creation date: 2024-06-27T14:47:05.435300
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/AS1G05_156T09_9000000604_04792cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04792cztM0_level2_quad_clean.evt
Size (bytes)443,070,72075,919,680
Size422.5 MB 72.4 MB
Events in quadrant A3,125,460472,210
Events in quadrant B3,604,259470,475
Events in quadrant C2,951,306471,497
Events in quadrant D3,315,943451,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136183
B0148952
C0129992
D0142672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62021201.934860%
B6202681.096421%
C6202130.209610%
D6202370.596582%

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 7477 6203 90 90 1.20% 1.45%
B 7477 6203 28 28 0.37% 0.45%
C 7477 6203 2 2 0.03% 0.03%
D 7477 6203 19 19 0.25% 0.31%

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 50 306034 2167.08 701 688 140.9
A 0 118 63028 442.43 701 688 140.9
A 8 15 29558 204.89 701 688 140.9
B 8 3 387088 2863.72 721 705 134.9
B 10 16 165746 1223.22 721 705 134.9
B 15 204 110738 815.52 721 705 134.9
C 8 208 144725 886.68 701 703 162.4
C 1 16 32261 194.29 701 703 162.4
C 8 128 13086 76.24 701 703 162.4
D 2 136 197150 1171.66 692 671 167.7
D 13 235 155142 921.15 692 671 167.7
D 2 63 71913 424.83 692 671 167.7

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