ASTROSAT CZTI

Data Quality Report

Orbit 31725

Creation date: 2024-06-27T20:31:58.641557
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/AS1T04_034T01_9000004632_31725cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31725cztM0_level2_quad_clean.evt
Size (bytes)2,800,967,040320,788,800
Size2.6 GB 305.9 MB
Events in quadrant A19,573,1481,961,671
Events in quadrant B29,488,7181,957,633
Events in quadrant C16,205,7861,948,052
Events in quadrant D17,679,1821,921,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05680
B05680
C05680
D05680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0761205
B01067495
C0653745
D0707335

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2801318606.639774%
B28014313211.180124%
C280149473.380453%
D280147702.748626%

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 31723 28018 1074 1074 3.39% 3.83%
B 31724 28019 1594 1594 5.02% 5.69%
C 31724 28019 311 311 0.98% 1.11%
D 31724 28019 534 534 1.68% 1.91%

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 0 13 6445366 9487.29 3401 3332 679.0
A 13 254 50744 69.82 3401 3332 679.0
A 3 137 34916 46.51 3401 3332 679.0
B 4 80 8168047 12939.96 3318 3235 631.0
B 6 159 7324926 11603.74 3318 3235 631.0
B 10 245 412609 648.79 3318 3235 631.0
C 0 10 2270455 2918.86 3301 3320 776.7
C 14 238 529607 677.58 3301 3320 776.7
C 3 233 208307 263.91 3301 3320 776.7
D 8 195 2447195 3071.76 3360 3269 795.6
D 12 233 1559598 1956.15 3360 3269 795.6
D 12 227 409695 510.84 3360 3269 795.6

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