ASTROSAT CZTI

Data Quality Report

Orbit 22715

Creation date: 2024-06-27T18:44:46.345370
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/AS1A08_007T01_9000003362_22715cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22715cztM0_level2_quad_clean.evt
Size (bytes)534,902,40093,991,680
Size510.1 MB 89.6 MB
Events in quadrant A3,492,913598,959
Events in quadrant B3,724,301600,143
Events in quadrant C3,509,704575,319
Events in quadrant D4,972,068558,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151881
B0157461
C0152171
D0197431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7380781.056911%
B73811081.463216%
C7381881.192250%
D73813144.254166%

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 7585 7381 0 0 0.00% 0.00%
B 7586 7382 7 7 0.09% 0.09%
C 7586 7382 0 0 0.00% 0.00%
D 7586 7382 219 219 2.89% 2.97%

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 14618 75.34 901 881 182.3
A 11 47 8536 41.98 901 881 182.3
A 0 226 7856 38.25 901 881 182.3
B 15 33 82154 478.34 897 874 169.9
B 0 245 32806 187.92 897 874 169.9
B 0 219 28165 160.61 897 874 169.9
C 14 238 133783 666.52 856 861 199.4
C 10 22 13186 61.8 856 861 199.4
C 10 23 10746 49.57 856 861 199.4
D 13 172 589851 2816.68 862 837 209.1
D 10 230 560248 2675.12 862 837 209.1
D 12 233 171894 818.0 862 837 209.1

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