ASTROSAT CZTI

Data Quality Report

Orbit 20294

Creation date: 2024-06-27T18:13:32.352799
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_174T01_9000003008_20294cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20294cztM0_level2_quad_clean.evt
Size (bytes)471,672,00097,534,080
Size449.8 MB 93.0 MB
Events in quadrant A3,368,891632,877
Events in quadrant B3,344,828647,237
Events in quadrant C3,361,936623,013
Events in quadrant D3,779,264609,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136722
B0136962
C0137372
D0151792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328610.963970%
B6328861.359039%
C6328971.532870%
D63282443.855879%

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 7618 6330 7 7 0.09% 0.11%
B 7618 6330 5 5 0.07% 0.08%
C 7618 6330 0 0 0.00% 0.00%
D 7618 6330 186 186 2.44% 2.94%

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 8 205 88281 527.17 830 815 165.9
A 14 238 52973 314.36 830 815 165.9
A 9 143 12770 72.05 830 815 165.9
B 7 220 54707 350.84 823 804 153.6
B 0 230 47559 304.31 823 804 153.6
B 12 111 18028 112.1 823 804 153.6
C 14 238 127324 674.43 807 815 187.6
C 3 247 56538 297.07 807 815 187.6
C 3 9 13413 67.16 807 815 187.6
D 1 52 657491 3386.97 809 789 193.9
D 2 120 23508 117.17 809 789 193.9
D 2 234 22887 113.97 809 789 193.9

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