ASTROSAT CZTI

Data Quality Report

Orbit 39643

Creation date: 2024-06-27T22:07:13.565605
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/AS1A12_018T01_9000005488_39643cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39643cztM0_level2_quad_clean.evt
Size (bytes)846,089,280164,488,320
Size806.9 MB 156.9 MB
Events in quadrant A6,943,9751,134,935
Events in quadrant B5,156,8821,143,985
Events in quadrant C12,137,118980,120
Events in quadrant D6,273,880997,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281623
B0229412
C0433322
D0261992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10446420.402068%
B104461421.359372%
C10446142813.670304%
D104462742.623014%

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 13282 10448 10 10 0.08% 0.10%
B 13282 10448 81 81 0.61% 0.78%
C 13282 10448 1334 1334 10.04% 12.77%
D 13282 10448 206 206 1.55% 1.97%

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 15 222 1830236 8011.47 1123 1101 228.3
A 10 83 721158 3153.79 1123 1101 228.3
A 15 254 15375 62.52 1123 1101 228.3
B 5 172 615543 2894.48 1110 1078 212.3
B 5 255 61314 283.75 1110 1078 212.3
B 5 207 46734 215.07 1110 1078 212.3
C 15 208 4259414 17582.76 1043 1050 242.2
C 9 187 3181607 13132.5 1043 1050 242.2
C 15 214 411409 1694.37 1043 1050 242.2
D 12 227 620824 2370.41 1089 1059 261.5
D 2 249 556976 2126.21 1089 1059 261.5
D 13 171 426406 1626.82 1089 1059 261.5

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