ASTROSAT CZTI

Data Quality Report

Orbit 35164

Creation date: 2022-07-18T20:58:23.578833
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/AS1C07_004T01_9000005042_35164cztM0_level2.evt modeM0/AS1C07_004T01_9000005042_35164cztM0_level2_quad_clean.evt
Size (bytes)578,638,08066,196,800
Size551.8 MB 63.1 MB
Events in quadrant A2,980,566424,284
Events in quadrant B5,780,653385,719
Events in quadrant C2,965,041420,404
Events in quadrant D5,434,419397,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122253
B0208802
C0120912
D0199292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5372541.005212%
B5372102319.043187%
C53721051.954579%
D53724658.655994%

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 7045 5373 38 38 0.54% 0.71%
B 7045 5373 654 654 9.28% 12.17%
C 7045 5373 96 96 1.36% 1.79%
D 7045 5373 466 466 6.61% 8.67%

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 15 169 347384 2743.0 630 619 126.4
A 10 83 96868 761.35 630 619 126.4
A 9 143 56562 442.52 630 619 126.4
B 5 236 2504065 22211.81 589 576 112.7
B 5 172 638496 5659.84 589 576 112.7
B 0 182 171140 1513.3 589 576 112.7
C 0 10 324870 2295.68 608 612 141.2
C 15 214 223552 1578.37 608 612 141.2
C 1 23 16778 114.45 608 612 141.2
D 5 223 1132076 7873.25 589 572 143.7
D 8 195 986383 6859.49 589 572 143.7
D 2 250 349572 2428.42 589 572 143.7

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