ASTROSAT CZTI

Data Quality Report

Orbit 38045

Creation date: 2024-06-27T21:47:43.473165
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/AS1A11_024T01_9000005358_38045cztM0_level2.fits modeM0/AS1A11_024T01_9000005358_38045cztM0_level2_quad_clean.evt
Size (bytes)604,661,760174,075,840
Size576.7 MB 166.0 MB
Events in quadrant A5,153,9481,184,693
Events in quadrant B5,240,7191,205,258
Events in quadrant C4,888,0151,172,772
Events in quadrant D6,360,9531,048,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206664
B0212083
C0197913
D0247223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9528250.262385%
B95281501.574307%
C952890.094458%
D95282963.106633%

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 13413 9530 4 4 0.03% 0.04%
B 13413 9530 105 105 0.78% 1.10%
C 13413 9530 5 5 0.04% 0.05%
D 13413 9530 261 261 1.95% 2.74%

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 10 83 646710 2795.13 1145 1125 231.0
A 12 16 33594 140.58 1145 1125 231.0
A 13 6 20609 84.36 1145 1125 231.0
B 5 255 220799 1015.29 1132 1105 216.4
B 5 172 146515 671.99 1132 1105 216.4
B 5 184 89098 406.65 1132 1105 216.4
C 15 214 409713 1583.7 1107 1115 258.0
C 1 23 67023 255.45 1107 1115 258.0
C 3 233 49469 187.42 1107 1115 258.0
D 10 199 513310 1892.53 1100 1071 270.7
D 12 227 361511 1331.69 1100 1071 270.7
D 1 52 319777 1177.5 1100 1071 270.7

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