ASTROSAT CZTI

Data Quality Report

Orbit 29509

Creation date: 2024-06-27T20:04:49.641362
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/AS1A10_048T05_9000004250_29509cztM0_level2.evt modeM0/AS1A10_048T05_9000004250_29509cztM0_level2_quad_clean.evt
Size (bytes)1,936,624,320264,798,720
Size1.8 GB 252.5 MB
Events in quadrant A8,970,0141,733,060
Events in quadrant B9,083,9781,767,509
Events in quadrant C10,286,5031,717,076
Events in quadrant D29,034,8641,494,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391863
B0392203
C0420963
D09954115

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189722161.138520%
B189732281.201708%
C189735452.872503%
D18971410221.622476%

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 20578 18976 19 19 0.09% 0.10%
B 20578 18976 10 10 0.05% 0.05%
C 20578 18976 71 71 0.35% 0.37%
D 20578 18976 4122 4122 20.03% 21.72%

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 96 149605 320.52 2277 2223 459.8
A 13 254 34375 69.92 2277 2223 459.8
A 0 13 31866 64.47 2277 2223 459.8
B 12 111 54903 120.76 2271 2208 436.3
B 0 230 53113 116.66 2271 2208 436.3
B 11 111 49601 108.61 2271 2208 436.3
C 7 247 702878 1362.57 2204 2224 514.2
C 3 233 499458 966.98 2204 2224 514.2
C 14 238 393011 759.97 2204 2224 514.2
D 8 195 18032578 36771.91 2045 1996 490.3
D 7 238 2067087 4211.58 2045 1996 490.3
D 12 33 856922 1743.55 2045 1996 490.3

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