ASTROSAT CZTI

Data Quality Report

Orbit 31710

Creation date: 2024-06-27T20:31:47.654231
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/AS1T04_034T01_9000004632_31710cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31710cztM0_level2_quad_clean.evt
Size (bytes)2,611,520,640339,122,880
Size2.4 GB 323.4 MB
Events in quadrant A17,838,7022,102,281
Events in quadrant B25,171,0102,108,782
Events in quadrant C16,298,7772,050,990
Events in quadrant D17,841,8072,025,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0711995
B0962255
C0664095
D0718805

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2884411904.125641%
B2884517426.039175%
C288458312.880915%
D288455401.872075%

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 32119 28850 679 679 2.11% 2.35%
B 32120 28851 845 845 2.63% 2.93%
C 32120 28851 289 289 0.90% 1.00%
D 32120 28851 310 310 0.97% 1.07%

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 4148746 5919.12 3505 3429 700.3
A 8 255 91640 125.96 3505 3429 700.3
A 14 238 63058 85.14 3505 3429 700.3
B 6 159 7514473 11462.79 3439 3347 655.3
B 4 80 2660073 4054.45 3439 3347 655.3
B 0 229 1031871 1569.64 3439 3347 655.3
C 3 233 1140130 1436.79 3373 3391 791.2
C 0 10 840681 1058.3 3373 3391 791.2
C 14 238 543564 682.76 3373 3391 791.2
D 8 195 2794048 3440.37 3427 3341 811.2
D 12 227 1304706 1604.32 3427 3341 811.2
D 12 233 391026 477.94 3427 3341 811.2

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