ASTROSAT CZTI

Data Quality Report

Orbit 35353

Creation date: 2022-04-13T09:51:25.912101
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/AS1A11_093T01_9000005064_35353cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35353cztM0_level2_quad_clean.evt
Size (bytes)229,861,44026,352,000
Size219.2 MB 25.1 MB
Events in quadrant A1,476,888151,855
Events in quadrant B1,654,719153,880
Events in quadrant C1,613,293149,332
Events in quadrant D2,025,458142,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061761
B066901
C064431
D078621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2792863.080229%
B2792863.080229%
C2792692.471347%
D27921073.832378%

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 2792 2792 60 60 2.15% 2.15%
B 2792 2792 35 35 1.25% 1.25%
C 2792 2792 59 59 2.11% 2.11%
D 2792 2792 85 85 3.04% 3.04%

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 15 169 174087 2659.43 316 309 65.3
A 10 83 58580 891.76 316 309 65.3
A 15 174 5977 86.74 316 309 65.3
B 5 236 169600 2769.14 312 304 61.1
B 5 172 137155 2238.44 312 304 61.1
B 0 155 29713 481.04 312 304 61.1
C 0 10 141343 1957.27 306 307 72.1
C 15 214 114253 1581.32 306 307 72.1
C 1 23 73817 1020.16 306 307 72.1
D 8 195 241819 3176.58 308 298 76.0
D 12 235 168177 2208.01 308 298 76.0
D 10 118 148641 1951.07 308 298 76.0

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