ASTROSAT CZTI

Data Quality Report

Orbit 23350

Creation date: 2024-06-27T18:53:07.536098
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/AS1A07_135T02_9000003450_23350cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23350cztM0_level2_quad_clean.evt
Size (bytes)820,540,800118,837,440
Size782.5 MB 113.3 MB
Events in quadrant A5,409,659721,784
Events in quadrant B5,950,584718,021
Events in quadrant C5,597,932719,492
Events in quadrant D7,170,416700,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223833
B0238893
C0226533
D0283167

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106561811.698574%
B106573763.528197%
C106572352.205123%
D106562722.552553%

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 12711 10656 1 1 0.01% 0.01%
B 12712 10658 179 179 1.41% 1.68%
C 12712 10657 1 1 0.01% 0.01%
D 12711 10657 112 112 0.88% 1.05%

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 15 174 54557 190.25 1389 1360 279.6
A 13 254 16080 52.64 1389 1360 279.6
A 0 226 12074 38.32 1389 1360 279.6
B 0 245 366450 1419.5 1362 1330 257.2
B 5 172 131020 504.21 1362 1330 257.2
B 0 190 38009 142.6 1362 1330 257.2
C 14 238 210709 666.53 1342 1352 314.1
C 7 247 62246 193.87 1342 1352 314.1
C 2 16 58671 182.49 1342 1352 314.1
D 1 52 1504084 4577.01 1359 1325 328.3
D 13 249 168709 509.81 1359 1325 328.3
D 9 85 130442 393.26 1359 1325 328.3

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