ASTROSAT CZTI

Data Quality Report

Orbit 10888

Creation date: 2024-06-27T16:05:14.418531
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/AS1A04_055T01_9000001574_10888cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10888cztM0_level2_quad_clean.evt
Size (bytes)612,587,520101,384,640
Size584.2 MB 96.7 MB
Events in quadrant A4,218,029657,087
Events in quadrant B6,316,732602,729
Events in quadrant C3,084,962681,243
Events in quadrant D4,449,104632,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173042
B0236491
C0144791
D0181641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71261882.638226%
B7126115816.250351%
C7126180.252596%
D71262323.255683%

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 7496 7127 101 101 1.35% 1.42%
B 7496 7127 838 838 11.18% 11.76%
C 7496 7127 5 5 0.07% 0.07%
D 7496 7127 207 207 2.76% 2.90%

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 8 5 911461 5508.1 806 789 165.3
A 5 16 159017 957.02 806 789 165.3
A 8 15 14792 84.7 806 789 165.3
B 4 239 2957982 20627.98 754 735 143.4
B 0 182 264020 1836.52 754 735 143.4
B 0 219 37142 253.95 754 735 143.4
C 0 207 15567 81.61 782 783 181.2
C 14 234 11831 60.99 782 783 181.2
C 13 61 6012 28.86 782 783 181.2
D 10 199 429650 2243.43 775 749 191.2
D 13 249 304393 1588.25 775 749 191.2
D 5 97 246875 1287.4 775 749 191.2

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