ASTROSAT CZTI

Data Quality Report

Orbit 27229

Creation date: 2024-06-27T19:37:57.833969
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_243T01_9000003918_27229cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27229cztM0_level2_quad_clean.evt
Size (bytes)500,904,00094,633,920
Size477.7 MB 90.2 MB
Events in quadrant A3,373,162621,057
Events in quadrant B3,508,807633,288
Events in quadrant C3,257,032593,070
Events in quadrant D4,592,715567,856

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141010
B0144430
C0137330
D0179270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6455741.146398%
B6456881.363073%
C6456881.363073%
D64562423.748451%

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 7630 6457 8 8 0.10% 0.12%
B 7631 6458 1 1 0.01% 0.02%
C 7631 6458 2 2 0.03% 0.03%
D 7631 6458 174 174 2.28% 2.69%

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 35382 204.39 843 830 169.0
A 13 248 32584 187.84 843 830 169.0
A 15 174 32208 185.62 843 830 169.0
B 3 64 92796 580.93 839 819 158.3
B 5 172 38753 239.59 839 819 158.3
B 0 245 34247 211.13 839 819 158.3
C 14 238 128625 681.67 799 806 187.5
C 15 208 13645 68.47 799 806 187.5
C 13 61 5674 25.96 799 806 187.5
D 1 52 705584 3696.0 791 774 190.7
D 2 250 352012 1841.88 791 774 190.7
D 5 222 203175 1061.39 791 774 190.7

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