ASTROSAT CZTI

Data Quality Report

Orbit 21568

Creation date: 2024-06-27T18:29:35.927580
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_155T02_9000003200_21568cztM0_level2.evt modeM0/AS1A05_155T02_9000003200_21568cztM0_level2_quad_clean.evt
Size (bytes)479,079,360101,243,520
Size456.9 MB 96.6 MB
Events in quadrant A3,308,914664,402
Events in quadrant B3,440,793677,712
Events in quadrant C3,379,788651,825
Events in quadrant D3,953,665634,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133432
B0137722
C0135782
D0156222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280420.668790%
B6280641.019108%
C6280701.114650%
D62801492.372611%

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 7610 6282 0 0 0.00% 0.00%
B 7610 6282 1 1 0.01% 0.02%
C 7610 6282 0 0 0.00% 0.00%
D 7610 6282 96 96 1.26% 1.53%

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 8059 42.57 857 842 169.5
A 0 226 7744 40.72 857 842 169.5
A 12 96 6455 33.11 857 842 169.5
B 0 230 46747 291.5 849 831 157.5
B 0 228 33095 204.83 849 831 157.5
B 0 190 24273 148.82 849 831 157.5
C 14 238 131589 680.98 831 840 192.0
C 13 61 5862 26.16 831 840 192.0
C 3 233 4701 20.11 831 840 192.0
D 1 52 473035 2366.53 839 818 199.5
D 12 235 99644 495.27 839 818 199.5
D 13 153 74746 370.49 839 818 199.5

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