ASTROSAT CZTI

Data Quality Report

Orbit 01184

Creation date: 2024-06-27T14:08:48.072777
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/AS1P01_997T02_9000000218_01184cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01184cztM0_level2_quad_clean.evt
Size (bytes)116,634,2408,029,440
Size111.2 MB 7.7 MB
Events in quadrant A596,27456,927
Events in quadrant B647,74357,376
Events in quadrant C630,83956,438
Events in quadrant D1,618,94426,794

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02604453
B02796491
C02674424
D063401070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122
B0122
C0144
D0122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53200.000000%
B53000.000000%
C53300.000000%
D527527100.000000%

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 535 534 5 5 0.93% 0.94%
B 535 534 6 6 1.12% 1.12%
C 533 533 8 8 1.50% 1.50%
D 532 531 526 526 98.87% 99.06%

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 15 233 992 21.62 154 154 38.7
A 4 32 675 13.44 154 154 38.7
A 11 79 605 11.63 154 154 38.7
B 8 219 10843 259.74 167 166 41.1
B 6 53 567 9.76 167 166 41.1
B 7 111 481 7.66 167 166 41.1
C 15 241 31346 708.8 151 157 44.0
C 12 4 2106 44.29 151 157 44.0
C 3 111 1491 30.32 151 157 44.0
D 1 239 1294955 48420.96 83 84 26.7
D 10 125 5309 195.39 83 84 26.7
D 13 205 3503 127.85 83 84 26.7

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