ASTROSAT CZTI

Data Quality Report

Orbit 29823

Creation date: 2024-06-27T20:08:05.183307
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_291T01_9000004278_29823cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29823cztM0_level2_quad_clean.evt
Size (bytes)654,477,120116,979,840
Size624.2 MB 111.6 MB
Events in quadrant A3,990,399766,549
Events in quadrant B6,677,071762,753
Events in quadrant C4,096,275727,094
Events in quadrant D4,496,774711,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171953
B0256323
C0173023
D0186603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8276400.483325%
B82762883.479942%
C82771712.065966%
D8277690.833635%

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 8806 8279 0 0 0.00% 0.00%
B 8806 8279 12 12 0.14% 0.14%
C 8807 8280 5 5 0.06% 0.06%
D 8807 8280 14 14 0.16% 0.17%

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 15504 70.28 1031 1008 206.3
A 3 137 10288 44.99 1031 1008 206.3
A 0 226 8671 37.15 1031 1008 206.3
B 6 159 2472867 12642.74 1020 995 195.5
B 0 190 125009 634.29 1020 995 195.5
B 4 171 34663 172.2 1020 995 195.5
C 14 238 158511 677.8 987 991 232.4
C 3 233 36118 151.15 987 991 232.4
C 2 114 20222 82.75 987 991 232.4
D 8 195 469920 1982.93 989 961 236.5
D 13 104 101130 423.55 989 961 236.5
D 2 250 78630 328.41 989 961 236.5

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