ASTROSAT CZTI

Data Quality Report

Orbit 18023

Creation date: 2024-06-27T17:44:00.111816
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_159T01_9000002678_18023cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18023cztM0_level2_quad_clean.evt
Size (bytes)524,874,240103,936,320
Size500.6 MB 99.1 MB
Events in quadrant A3,493,169690,799
Events in quadrant B3,752,688688,104
Events in quadrant C3,714,435656,457
Events in quadrant D4,472,587636,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146672
B0153772
C0153052
D0178662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6827801.171818%
B68281311.918571%
C68281021.493849%
D68281912.797305%

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 7752 6828 21 21 0.27% 0.31%
B 7753 6829 45 45 0.58% 0.66%
C 7753 6829 0 0 0.00% 0.00%
D 7753 6829 123 123 1.59% 1.80%

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 4 2 130976 738.65 873 858 176.2
A 15 174 7892 39.93 873 858 176.2
A 0 226 7630 38.44 873 858 176.2
B 5 172 186907 1111.89 866 845 167.3
B 7 220 82242 486.42 866 845 167.3
B 0 229 31515 183.28 866 845 167.3
C 3 233 208745 1071.74 827 836 194.0
C 14 238 127647 653.69 827 836 194.0
C 0 207 121457 621.79 827 836 194.0
D 11 176 763403 3703.88 838 816 205.9
D 5 222 349532 1693.71 838 816 205.9
D 12 233 95833 461.5 838 816 205.9

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