ASTROSAT CZTI

Data Quality Report

Orbit 26153

Creation date: 2024-06-27T19:25:26.290007
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_138T04_9000003776_26153cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26153cztM0_level2_quad_clean.evt
Size (bytes)486,120,960106,176,960
Size463.6 MB 101.3 MB
Events in quadrant A3,519,130688,654
Events in quadrant B3,350,691715,218
Events in quadrant C3,502,014683,900
Events in quadrant D3,911,117676,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146850
B0140540
C0144830
D0157760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476871.343422%
B6476400.617665%
C64761171.806671%
D6476701.080914%

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 7641 6478 55 55 0.72% 0.85%
B 7641 6477 2 2 0.03% 0.03%
C 7641 6476 3 3 0.04% 0.05%
D 7641 6478 21 21 0.27% 0.32%

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 13 300870 1808.01 834 819 166.0
A 13 254 10356 57.47 834 819 166.0
A 3 137 7426 39.81 834 819 166.0
B 0 230 27860 170.07 839 820 159.0
B 12 111 18798 113.07 839 820 159.0
B 11 111 16977 101.62 839 820 159.0
C 3 233 161273 836.51 820 828 191.8
C 14 238 133639 692.43 820 828 191.8
C 2 16 14265 70.06 820 828 191.8
D 1 52 621966 3172.76 825 806 195.8
D 8 195 90999 460.69 825 806 195.8
D 12 233 47925 240.67 825 806 195.8

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