ASTROSAT CZTI

Data Quality Report

Orbit 35748

Creation date: 2022-05-09T16:25:25.391033
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/AS1A09_029T07_9000005128_35748cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35748cztM0_level2_quad_clean.evt
Size (bytes)1,143,256,320213,586,560
Size1.1 GB 203.7 MB
Events in quadrant A7,558,6371,368,547
Events in quadrant B8,559,3541,381,103
Events in quadrant C8,519,9551,349,118
Events in quadrant D8,925,1681,287,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323775
B0356484
C0348284
D0369254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15699140.089178%
B156992201.401363%
C156992261.439582%
D156992491.586088%

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 19880 15702 2 2 0.01% 0.01%
B 19880 15702 136 136 0.68% 0.87%
C 19880 15702 220 220 1.11% 1.40%
D 19880 15702 247 247 1.24% 1.57%

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 10 83 381512 1049.54 1798 1759 361.8
A 15 169 94137 255.31 1798 1759 361.8
A 8 192 59086 158.44 1798 1759 361.8
B 5 172 1116679 3294.73 1775 1726 338.4
B 5 255 141456 412.91 1775 1726 338.4
B 0 189 106547 309.75 1775 1726 338.4
C 15 214 663070 1654.09 1725 1733 399.8
C 1 23 645278 1609.59 1725 1733 399.8
C 0 10 301725 750.32 1725 1733 399.8
D 14 52 649328 1538.08 1732 1683 421.1
D 13 249 484615 1146.9 1732 1683 421.1
D 8 195 252734 596.22 1732 1683 421.1

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