ASTROSAT CZTI

Data Quality Report

Orbit 35337

Creation date: 2022-04-11T18:34:46.118454
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_35337cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35337cztM0_level2_quad_clean.evt
Size (bytes)540,581,76061,865,280
Size515.5 MB 59.0 MB
Events in quadrant A2,583,935388,976
Events in quadrant B6,662,018348,035
Events in quadrant C2,993,043388,614
Events in quadrant D3,769,471372,071

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110543
B0234712
C0119442
D0146622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5352200.373692%
B5352141326.401345%
C5352941.756353%
D53521893.531390%

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 7294 5352 15 15 0.21% 0.28%
B 7295 5353 1135 1135 15.56% 21.20%
C 7295 5352 85 85 1.17% 1.59%
D 7294 5352 178 178 2.44% 3.33%

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 10 83 98790 793.4 621 611 123.7
A 8 192 28208 223.02 621 611 123.7
A 7 3 14907 115.53 621 611 123.7
B 5 236 3294513 31614.47 553 540 104.2
B 5 172 1152444 11055.59 553 540 104.2
B 3 112 17331 161.15 553 540 104.2
C 0 10 319541 2324.5 597 601 137.2
C 15 214 222475 1617.06 597 601 137.2
C 3 233 79252 573.22 597 601 137.2
D 8 195 438394 3017.93 596 578 145.1
D 12 233 311599 2143.92 596 578 145.1
D 2 249 192986 1326.3 596 578 145.1

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