ASTROSAT CZTI

Data Quality Report

Orbit 04944

Creation date: 2024-06-27T14:49:08.254438
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/AS1G05_021T01_9000000624_04944cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04944cztM0_level2_quad_clean.evt
Size (bytes)961,885,440178,954,560
Size917.3 MB 170.7 MB
Events in quadrant A9,053,0121,099,479
Events in quadrant B5,749,9001,187,296
Events in quadrant C5,095,2941,195,117
Events in quadrant D8,428,5541,115,410

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355922
B0252942
C0240972
D0334242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11883163913.792813%
B118831361.144492%
C11883270.227215%
D118835714.805184%

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 12783 11885 1467 1467 11.48% 12.34%
B 12782 11884 72 72 0.56% 0.61%
C 12783 11885 7 7 0.05% 0.06%
D 12783 11885 510 510 3.99% 4.29%

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 0 31 4236341 16635.68 1239 1209 254.6
A 15 31 26547 99.53 1239 1209 254.6
A 12 194 12673 45.03 1239 1209 254.6
B 15 204 236433 917.97 1334 1301 256.1
B 10 16 216119 838.66 1334 1301 256.1
B 0 219 64494 246.71 1334 1301 256.1
C 1 16 37617 121.89 1287 1290 298.0
C 9 247 22153 70.0 1287 1290 298.0
C 13 61 10571 31.14 1287 1290 298.0
D 2 33 1373243 4460.16 1258 1218 307.6
D 12 22 825229 2678.68 1258 1218 307.6
D 13 235 230285 744.65 1258 1218 307.6

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