ASTROSAT CZTI

Data Quality Report

Orbit 24579

Creation date: 2024-06-27T19:07:30.573780
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/AS1T03_183T01_9000003610_24579cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24579cztM0_level2_quad_clean.evt
Size (bytes)733,726,080120,153,600
Size699.7 MB 114.6 MB
Events in quadrant A3,007,261890,001
Events in quadrant B3,192,169900,582
Events in quadrant C11,700,686616,702
Events in quadrant D3,915,181811,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126280
B0131640
C0389040
D0157410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5989380.634497%
B5989781.302388%
C5990384764.223706%
D5990330.550918%

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 7344 5990 0 0 0.00% 0.00%
B 7344 5990 18 18 0.25% 0.30%
C 7345 5991 3317 3317 45.16% 55.37%
D 7345 5991 25 25 0.34% 0.42%

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 9943 59.63 779 766 153.9
A 0 226 6774 39.04 779 766 153.9
A 3 137 6473 37.08 779 766 153.9
B 3 64 129761 900.65 775 758 143.2
B 15 33 16823 112.16 775 758 143.2
B 12 111 16460 109.62 775 758 143.2
C 7 247 9212722 70063.44 580 584 131.5
C 2 16 97134 734.31 580 584 131.5
C 14 238 91807 693.8 580 584 131.5
D 8 195 886625 5066.38 735 715 174.9
D 12 218 151736 863.67 735 715 174.9
D 1 52 94335 535.4 735 715 174.9

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