ASTROSAT CZTI

Data Quality Report

Orbit 19230

Creation date: 2024-06-27T18:00:14.929345
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_007T06_9000002844_19230cztM0_level2.evt modeM0/AS1A05_007T06_9000002844_19230cztM0_level2_quad_clean.evt
Size (bytes)856,537,920152,784,000
Size816.9 MB 145.7 MB
Events in quadrant A5,471,001955,799
Events in quadrant B5,670,583974,707
Events in quadrant C7,276,995942,705
Events in quadrant D6,704,782919,441

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244183
B0246642
C0295922
D0284182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120721050.869781%
B120721231.018887%
C120721961.623592%
D120724263.528827%

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 13412 12072 0 0 0.00% 0.00%
B 13412 12074 2 2 0.01% 0.02%
C 13412 12072 1 1 0.01% 0.01%
D 13412 12074 296 296 2.21% 2.45%

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 9 143 14666 46.51 1416 1384 285.6
A 13 254 14126 44.62 1416 1384 285.6
A 0 226 12261 38.09 1416 1384 285.6
B 7 220 52129 186.94 1416 1377 271.5
B 12 111 33590 118.65 1416 1377 271.5
B 11 111 29369 103.1 1416 1377 271.5
C 3 233 1754244 5568.27 1357 1367 314.8
C 14 238 210396 664.01 1357 1367 314.8
C 0 207 12117 34.15 1357 1367 314.8
D 11 176 1437270 4377.3 1361 1321 328.0
D 2 234 54095 160.87 1361 1321 328.0
D 1 52 51575 153.19 1361 1321 328.0

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