ASTROSAT CZTI

Data Quality Report

Orbit 20240316_T05_088T01_9000006126_level2

Creation date: 2024-03-19T14:37:46.428786
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/AS1T05_088T01_9000006126cztM0_level2.fits modeM0/AS1T05_088T01_9000006126cztM0_level2_quad_clean.evt
Size (bytes)1,333,753,9201,362,424,320
Size1.2 GB 1.3 GB
Events in quadrant A8,038,0828,450,939
Events in quadrant B7,390,9787,863,508
Events in quadrant C8,105,4688,097,922
Events in quadrant D6,279,4286,297,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05047440
B05897910
C03543990
D07094810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031280
B031280
C031280
D031280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15397355753.620765%
B1539732363915.352692%
C15397352883.434368%
D1539753075419.973372%

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 178480 153977 0 0 0.00% 0.00%
B 178480 153872 0 0 0.00% 0.00%
C 178480 153787 0 0 0.00% 0.00%
D 178480 153695 0 0 0.00% 0.00%

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 15 236 6468 8.6 2094 1959 524.3
A 7 110 6384 8.44 2094 1959 524.3
A 0 29 6141 7.98 2094 1959 524.3
B 2 9 6906 13.32 1954 1858 379.1
B 2 8 5590 9.84 1954 1858 379.1
B 3 17 5414 9.38 1954 1858 379.1
C 1 81 6441 8.08 2147 1998 549.5
C 3 202 6279 7.79 2147 1998 549.5
C 1 80 6176 7.6 2147 1998 549.5
D 10 189 4677 6.14 1811 1645 494.1
D 15 47 4529 5.84 1811 1645 494.1
D 4 12 4504 5.79 1811 1645 494.1

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