ASTROSAT CZTI

Data Quality Report

Orbit 04544

Creation date: 2024-06-27T14:43:33.155521
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_250T01_9000000568_04544cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04544cztM0_level2_quad_clean.evt
Size (bytes)300,931,20041,474,880
Size287.0 MB 39.6 MB
Events in quadrant A3,417,053237,345
Events in quadrant B1,784,839259,579
Events in quadrant C1,928,424251,419
Events in quadrant D1,727,004241,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127271
B077781
C083841
D080571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37523679.781450%
B375290.239872%
C3752170.453092%
D3752140.373134%

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 3752 3751 231 231 6.16% 6.16%
B 3752 3751 2 2 0.05% 0.05%
C 3752 3751 13 13 0.35% 0.35%
D 3752 3752 12 12 0.32% 0.32%

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 13 1841016 21987.99 404 396 83.7
A 8 15 7080 79.85 404 396 83.7
A 0 118 5838 65.01 404 396 83.7
B 4 80 56372 681.6 429 420 82.1
B 14 167 22486 268.8 429 420 82.1
B 4 48 18029 214.51 429 420 82.1
C 14 48 306059 3196.74 408 412 95.6
C 1 16 16721 170.57 408 412 95.6
C 5 250 6081 59.29 408 412 95.6
D 1 20 84123 797.01 395 387 105.1
D 2 136 37866 356.73 395 387 105.1
D 13 235 34625 325.88 395 387 105.1

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