ASTROSAT CZTI

Data Quality Report

Orbit 39947

Creation date: 2024-06-27T22:10:28.636196
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/AS1C07_001T01_9000005514_39947cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39947cztM0_level2_quad_clean.evt
Size (bytes)716,999,040169,948,800
Size683.8 MB 162.1 MB
Events in quadrant A5,665,5421,161,375
Events in quadrant B5,396,6351,164,716
Events in quadrant C8,132,8301,048,223
Events in quadrant D6,511,2681,026,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238563
B0238692
C0309732
D0271572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10763630.585339%
B107631641.523739%
C107638668.046084%
D107633202.973149%

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 13600 10765 47 47 0.35% 0.44%
B 13600 10765 118 118 0.87% 1.10%
C 13600 10765 859 859 6.32% 7.98%
D 13599 10764 313 313 2.30% 2.91%

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 10 83 844268 3602.82 1147 1124 234.0
A 15 223 173068 734.73 1147 1124 234.0
A 13 248 49616 207.21 1147 1124 234.0
B 5 255 340830 1540.19 1134 1101 220.6
B 4 171 262671 1185.85 1134 1101 220.6
B 0 230 99499 446.1 1134 1101 220.6
C 9 54 3206195 12657.88 1089 1094 253.2
C 15 214 432118 1702.24 1089 1094 253.2
C 9 187 98300 383.89 1089 1094 253.2
D 2 249 676669 2503.87 1109 1076 269.8
D 2 250 662573 2451.63 1109 1076 269.8
D 12 227 476092 1760.5 1109 1076 269.8

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