ASTROSAT CZTI

Data Quality Report

Orbit 28833

Creation date: 2024-06-27T19:56:57.042382
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/AS1A10_121T01_9000004134_28833cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28833cztM0_level2_quad_clean.evt
Size (bytes)604,048,320113,952,960
Size576.1 MB 108.7 MB
Events in quadrant A3,121,312770,585
Events in quadrant B3,294,091807,643
Events in quadrant C3,691,602753,307
Events in quadrant D7,763,751683,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130901
B0136321
C0150411
D0274694

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243210.336377%
B6243550.880987%
C62433054.885472%
D6243118618.997277%

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 7533 6243 0 0 0.00% 0.00%
B 7533 6243 3 3 0.04% 0.05%
C 7533 6243 1 1 0.01% 0.02%
D 7533 6243 1104 1104 14.66% 17.68%

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 14 235 20020 120.49 802 788 159.6
A 13 254 12142 71.13 802 788 159.6
A 0 226 6817 37.77 802 788 159.6
B 10 245 63748 422.85 812 792 148.9
B 5 255 24018 156.0 812 792 148.9
B 12 111 17040 109.13 812 792 148.9
C 3 233 312957 1694.18 790 798 184.3
C 14 238 196937 1064.51 790 798 184.3
C 14 254 101158 544.69 790 798 184.3
D 1 52 2865590 16443.31 738 719 174.2
D 8 195 1224914 7026.43 738 719 174.2
D 12 233 491263 2815.54 738 719 174.2

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