ASTROSAT CZTI

Data Quality Report

Orbit 04828

Creation date: 2024-06-27T14:47:35.058804
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/AS1G05_144T01_9000000612_04828cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04828cztM0_level2_quad_clean.evt
Size (bytes)656,308,80077,014,080
Size625.9 MB 73.4 MB
Events in quadrant A4,065,429441,954
Events in quadrant B5,958,827424,851
Events in quadrant C4,199,906446,279
Events in quadrant D5,072,905424,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182872
B0235762
C0184562
D0212474

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85421501.756029%
B85426307.375322%
C85421181.381410%
D85413123.652968%

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 9327 8544 36 36 0.39% 0.42%
B 9327 8544 366 366 3.92% 4.28%
C 9327 8544 10 10 0.11% 0.12%
D 9327 8544 187 187 2.00% 2.19%

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 13 251 214525 1063.38 978 957 200.8
A 0 50 46557 227.05 978 957 200.8
A 8 15 26218 125.78 978 957 200.8
B 10 16 1840883 9766.37 973 947 188.4
B 8 3 158794 837.85 973 947 188.4
B 15 204 122416 644.76 973 947 188.4
C 8 208 296809 1303.84 959 963 226.9
C 9 247 125154 547.33 959 963 226.9
C 8 128 16206 67.18 959 963 226.9
D 13 235 320610 1362.56 943 911 234.6
D 7 237 262608 1115.36 943 911 234.6
D 2 234 161362 683.85 943 911 234.6

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