ASTROSAT CZTI

Data Quality Report

Orbit 18960

Creation date: 2024-06-27T17:57:05.858324
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/AS1A05_205T01_9000002824_18960cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18960cztM0_level2_quad_clean.evt
Size (bytes)573,785,280105,327,360
Size547.2 MB 100.4 MB
Events in quadrant A3,328,641696,885
Events in quadrant B6,369,509672,580
Events in quadrant C3,447,523701,065
Events in quadrant D3,789,292663,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138212
B0233232
C0141582
D0153682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6528340.520833%
B6528103015.778186%
C6528711.087623%
D65271121.715949%

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 7798 6529 0 0 0.00% 0.00%
B 7798 6529 669 669 8.58% 10.25%
C 7798 6529 0 0 0.00% 0.00%
D 7797 6528 65 65 0.83% 1.00%

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 14 235 36332 207.56 853 835 171.0
A 0 226 7316 37.9 853 835 171.0
A 3 137 6180 31.25 853 835 171.0
B 3 112 3059619 20584.18 801 781 148.6
B 0 189 89246 595.32 801 781 148.6
B 7 220 70216 467.26 801 781 148.6
C 14 238 129762 650.44 850 860 198.2
C 13 61 5960 25.73 850 860 198.2
C 6 96 2568 8.62 850 860 198.2
D 1 52 250467 1237.16 840 819 201.8
D 12 218 158835 783.07 840 819 201.8
D 7 238 150341 740.97 840 819 201.8

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