ASTROSAT CZTI

Data Quality Report

Orbit 15694

Creation date: 2024-06-27T17:12:14.029135
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/AS1T02_088T01_9000002320_15694cztM0_level2.evt modeM0/AS1T02_088T01_9000002320_15694cztM0_level2_quad_clean.evt
Size (bytes)585,527,04088,251,840
Size558.4 MB 84.2 MB
Events in quadrant A3,544,017557,271
Events in quadrant B3,878,202566,726
Events in quadrant C3,626,191547,648
Events in quadrant D6,180,548483,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153285
B0160774
C0154124
D0231934

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74151802.427512%
B74152383.209710%
C74152082.805125%
D741579410.708024%

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 7726 7419 0 0 0.00% 0.00%
B 7726 7419 37 37 0.48% 0.50%
C 7726 7419 0 0 0.00% 0.00%
D 7726 7419 655 655 8.48% 8.83%

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 0 226 8145 38.72 917 897 187.2
A 12 194 6752 31.28 917 897 187.2
A 3 137 6374 29.26 917 897 187.2
B 4 48 98469 554.36 911 887 176.0
B 4 173 49598 276.73 911 887 176.0
B 5 236 40876 227.18 911 887 176.0
C 14 238 132762 645.89 879 883 204.2
C 3 233 40219 192.65 879 883 204.2
C 9 54 17965 83.66 879 883 204.2
D 1 52 2108307 9957.32 856 830 211.7
D 12 221 589001 2778.97 856 830 211.7
D 12 110 193242 909.1 856 830 211.7

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