ASTROSAT CZTI

Data Quality Report

Orbit 23843

Creation date: 2024-06-27T18:59:17.726056
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_027T03_9000003528_23843cztM0_level2.evt modeM0/AS1A07_027T03_9000003528_23843cztM0_level2_quad_clean.evt
Size (bytes)632,439,36091,370,880
Size603.1 MB 87.1 MB
Events in quadrant A3,427,813582,841
Events in quadrant B3,528,991591,950
Events in quadrant C3,721,288567,179
Events in quadrant D7,984,233519,516

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149152
B0150882
C0155152
D0288862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7253550.758307%
B7254971.337193%
C72541451.998897%
D72546809.374138%

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 8868 7255 0 0 0.00% 0.00%
B 8869 7256 1 1 0.01% 0.01%
C 8869 7256 19 19 0.21% 0.26%
D 8869 7256 509 509 5.74% 7.01%

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 12751 66.68 884 864 178.3
A 2 250 10969 56.69 884 864 178.3
A 13 252 7883 39.38 884 864 178.3
B 12 111 20311 116.77 885 862 166.6
B 11 111 17595 100.47 885 862 166.6
B 14 111 15264 86.47 885 862 166.6
C 14 238 134362 675.48 845 848 197.7
C 0 10 112308 563.9 845 848 197.7
C 0 239 84693 424.19 845 848 197.7
D 8 195 3381571 16723.06 833 807 202.2
D 1 52 1297444 6413.86 833 807 202.2
D 12 233 36008 174.12 833 807 202.2

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