ASTROSAT CZTI

Data Quality Report

Orbit 05915

Creation date: 2024-06-27T15:00:47.584401
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/AS1A02_174T01_9000000766_05915cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05915cztM0_level2_quad_clean.evt
Size (bytes)622,589,76073,834,560
Size593.7 MB 70.4 MB
Events in quadrant A2,953,839459,368
Events in quadrant B3,287,273460,339
Events in quadrant C3,064,586453,249
Events in quadrant D9,108,355407,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342259
B01433482
C01388534
D031839166

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01342
D01342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6516350.537139%
B6514751.151366%
C6528991.516544%
D6506126319.412850%

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 7559 6545 7 7 0.09% 0.11%
B 7559 6545 12 12 0.16% 0.18%
C 7559 6545 71 71 0.94% 1.08%
D 7559 6544 1147 1147 15.17% 17.53%

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 15 236 82070 527.23 745 726 154.3
A 12 194 7363 43.01 745 726 154.3
A 0 226 7247 42.26 745 726 154.3
B 15 204 90935 624.49 749 733 144.4
B 0 214 88823 609.87 749 733 144.4
B 4 80 68419 468.61 749 733 144.4
C 1 16 196644 1159.19 723 724 169.0
C 9 247 36382 210.98 723 724 169.0
C 9 68 6815 36.04 723 724 169.0
D 1 20 5546817 32232.29 694 672 172.1
D 2 152 754454 4380.72 694 672 172.1
D 2 63 37682 215.09 694 672 172.1

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