ASTROSAT CZTI

Data Quality Report

Orbit 27138

Creation date: 2024-06-27T19:36:54.465699
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/AS1T03_244T01_9000003912_27138cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27138cztM0_level2_quad_clean.evt
Size (bytes)500,754,240103,455,360
Size477.6 MB 98.7 MB
Events in quadrant A3,029,679715,506
Events in quadrant B3,113,539718,869
Events in quadrant C3,005,592675,118
Events in quadrant D5,621,659616,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127490
B0128510
C0125370
D0207120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5823550.944530%
B5824480.824176%
C5824821.407967%
D582476913.203984%

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 7033 5824 1 1 0.01% 0.02%
B 7034 5825 3 3 0.04% 0.05%
C 7034 5825 2 2 0.03% 0.03%
D 7034 5824 501 501 7.12% 8.60%

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 12 189 26940 170.31 772 757 153.7
A 14 235 11714 71.27 772 757 153.7
A 13 254 9765 58.59 772 757 153.7
B 3 112 78608 549.92 757 739 141.6
B 10 245 38214 264.65 757 739 141.6
B 12 111 16212 109.27 757 739 141.6
C 14 238 116919 685.06 730 736 169.6
C 15 208 33094 190.79 730 736 169.6
C 2 16 6022 31.17 730 736 169.6
D 1 52 2324542 13034.63 693 679 178.3
D 7 38 436118 2442.39 693 679 178.3
D 2 250 165600 925.05 693 679 178.3

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