ASTROSAT CZTI

Data Quality Report

Orbit 18681

Creation date: 2024-06-27T17:53:22.710191
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/AS1T03_091T01_9000002790_18681cztM0_level2.evt modeM0/AS1T03_091T01_9000002790_18681cztM0_level2_quad_clean.evt
Size (bytes)190,451,52017,133,120
Size181.6 MB 16.3 MB
Events in quadrant A1,197,16983,258
Events in quadrant B1,227,13286,886
Events in quadrant C1,254,36982,987
Events in quadrant D1,907,78175,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052951
B052931
C053051
D074811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A263140.152033%
B263130.114025%
C2631100.380084%
D26322178.244681%

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 2631 2631 0 0 0.00% 0.00%
B 2631 2631 0 0 0.00% 0.00%
C 2631 2631 0 0 0.00% 0.00%
D 2632 2632 188 188 7.14% 7.14%

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 13 254 3892 55.82 308 302 64.3
A 3 15 3517 49.99 308 302 64.3
A 0 226 2568 35.23 308 302 64.3
B 12 111 7285 115.77 311 302 60.3
B 11 111 6257 98.73 311 302 60.3
B 14 111 5528 86.64 311 302 60.3
C 14 238 47604 648.26 305 306 73.0
C 3 233 17543 236.25 305 306 73.0
C 13 61 2159 25.4 305 306 73.0
D 1 52 723714 10203.72 290 281 70.9
D 7 238 66813 938.41 290 281 70.9
D 12 110 15493 214.56 290 281 70.9

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