ASTROSAT CZTI

Data Quality Report

Orbit 26433

Creation date: 2024-06-27T19:28:58.262381
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/AS1A09_108T02_9000003822_26433cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26433cztM0_level2_quad_clean.evt
Size (bytes)522,276,480104,359,680
Size498.1 MB 99.5 MB
Events in quadrant A3,492,268665,676
Events in quadrant B3,577,094691,148
Events in quadrant C3,734,445666,383
Events in quadrant D4,536,041647,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149380
B0150650
C0155380
D0181730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7033520.739372%
B70341161.649133%
C70341552.203583%
D70333955.616380%

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 9488 7035 0 0 0.00% 0.00%
B 9489 7036 2 2 0.02% 0.03%
C 9489 7036 2 2 0.02% 0.03%
D 9488 7034 247 247 2.60% 3.51%

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 13 254 10630 53.76 902 884 181.3
A 12 189 8985 44.69 902 884 181.3
A 3 137 8176 40.23 902 884 181.3
B 0 244 20567 115.35 909 884 170.6
B 12 111 20439 114.6 909 884 170.6
B 11 111 18410 102.71 909 884 170.6
C 14 238 139324 670.01 883 888 206.6
C 14 176 105427 505.95 883 888 206.6
C 3 233 38796 183.47 883 888 206.6
D 11 176 565709 2772.58 861 841 203.7
D 12 233 482712 2365.2 861 841 203.7
D 1 52 156630 764.67 861 841 203.7

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