ASTROSAT CZTI

Data Quality Report

Orbit 12572

Creation date: 2024-06-27T16:29:25.722028
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/AS1A04_085T01_9000001868_12572cztM0_level2.evt modeM0/AS1A04_085T01_9000001868_12572cztM0_level2_quad_clean.evt
Size (bytes)243,901,44044,354,880
Size232.6 MB 42.3 MB
Events in quadrant A1,713,520273,107
Events in quadrant B1,860,539277,277
Events in quadrant C1,711,666274,062
Events in quadrant D1,854,829263,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074142
B077741
C074621
D079941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3599621.722701%
B35991032.861906%
C3599491.361489%
D3599912.528480%

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 4440 3600 0 0 0.00% 0.00%
B 4440 3600 34 34 0.77% 0.94%
C 4440 3600 2 2 0.05% 0.06%
D 4440 3600 44 44 0.99% 1.22%

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 12 189 4701 46.4 441 431 92.0
A 1 162 4534 44.58 441 431 92.0
A 0 226 3892 37.61 441 431 92.0
B 3 64 120111 1380.16 440 429 86.7
B 0 214 10395 114.93 440 429 86.7
B 12 111 9856 108.71 440 429 86.7
C 15 208 42890 424.28 426 427 100.1
C 14 67 3076 26.47 426 427 100.1
C 13 61 3074 26.45 426 427 100.1
D 1 52 216365 2091.23 423 409 103.3
D 13 249 20797 197.43 423 409 103.3
D 2 234 13571 127.46 423 409 103.3

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