ASTROSAT CZTI

Data Quality Report

Orbit 26208

Creation date: 2024-06-27T19:26:07.652048
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/AS1C05_019T04_9000003788_26208cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26208cztM0_level2_quad_clean.evt
Size (bytes)498,240,000128,730,240
Size475.2 MB 122.8 MB
Events in quadrant A4,150,975859,195
Events in quadrant B3,356,010880,986
Events in quadrant C3,283,874848,882
Events in quadrant D3,837,865837,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168190
B0144310
C0141120
D0162340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67891892.783915%
B6789610.898512%
C6788600.883913%
D67881572.312905%

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 7659 6790 148 148 1.93% 2.18%
B 7659 6790 24 24 0.31% 0.35%
C 7658 6789 0 0 0.00% 0.00%
D 7658 6789 110 110 1.44% 1.62%

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 1024803 6334.68 802 784 161.7
A 4 2 25970 155.8 802 784 161.7
A 13 254 11801 68.15 802 784 161.7
B 5 172 87501 568.27 807 786 152.6
B 0 190 83556 542.42 807 786 152.6
B 12 111 18100 113.46 807 786 152.6
C 14 238 122524 665.15 784 788 183.0
C 2 16 46390 249.16 784 788 183.0
C 3 233 27251 144.59 784 788 183.0
D 12 233 433003 2246.87 786 765 192.4
D 1 52 256610 1329.94 786 765 192.4
D 7 38 74120 381.31 786 765 192.4

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