ASTROSAT CZTI

Data Quality Report

Orbit 15640

Creation date: 2024-06-27T17:11:29.612848
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/AS1T02_086T01_9000002316_15640cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15640cztM0_level2_quad_clean.evt
Size (bytes)899,475,840177,952,320
Size857.8 MB 169.7 MB
Events in quadrant A5,954,8361,144,818
Events in quadrant B6,146,1241,157,667
Events in quadrant C6,275,7271,126,397
Events in quadrant D7,989,9881,068,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265194
B0266213
C0269723
D0326273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12911640.495701%
B12911630.487956%
C129111190.921695%
D129115914.577492%

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 14182 12913 16 16 0.11% 0.12%
B 14182 12912 1 1 0.01% 0.01%
C 14182 12912 4 4 0.03% 0.03%
D 14182 12913 458 458 3.23% 3.55%

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 4 2 59530 192.8 1509 1478 301.1
A 15 223 32210 102.07 1509 1478 301.1
A 3 80 20514 63.22 1509 1478 301.1
B 0 189 41918 139.9 1512 1471 289.1
B 12 111 33481 110.72 1512 1471 289.1
B 4 173 32623 107.75 1512 1471 289.1
C 3 233 378387 1110.04 1442 1452 339.6
C 14 238 223687 654.46 1442 1452 339.6
C 10 22 44961 128.13 1442 1452 339.6
D 1 52 2244363 6433.18 1427 1384 348.7
D 4 239 52203 145.76 1427 1384 348.7
D 2 234 52075 145.39 1427 1384 348.7

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