ASTROSAT CZTI

Data Quality Report

Orbit 23254

Creation date: 2024-06-27T18:51:54.089517
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/AS1A08_004T03_9000003438_23254cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23254cztM0_level2_quad_clean.evt
Size (bytes)891,037,440152,870,400
Size849.8 MB 145.8 MB
Events in quadrant A5,973,159952,206
Events in quadrant B6,153,122966,939
Events in quadrant C6,791,943919,993
Events in quadrant D7,200,303905,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259812
B0262432
C0285512
D0298182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128001301.015625%
B128001761.375000%
C128003022.359375%
D128002652.070312%

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 14045 12800 0 0 0.00% 0.00%
B 14045 12800 1 1 0.01% 0.01%
C 14045 12800 71 71 0.51% 0.55%
D 14045 12800 136 136 0.97% 1.06%

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 13 254 18916 55.59 1546 1510 313.1
A 3 137 13822 39.32 1546 1510 313.1
A 0 226 13071 36.92 1546 1510 313.1
B 4 173 46103 149.33 1543 1502 298.7
B 12 111 37016 118.9 1543 1502 298.7
B 11 111 32743 104.6 1543 1502 298.7
C 8 208 520953 1482.99 1480 1486 350.3
C 14 238 233395 662.06 1480 1486 350.3
C 0 207 213451 605.12 1480 1486 350.3
D 1 52 1169218 3197.97 1501 1461 365.2
D 12 233 120507 326.01 1501 1461 365.2
D 2 152 115484 312.26 1501 1461 365.2

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