ASTROSAT CZTI

Data Quality Report

Orbit 08494

Creation date: 2024-06-27T15:33:27.535038
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/AS1C02_033T02_9000001198_08494cztM0_level2.evt modeM0/AS1C02_033T02_9000001198_08494cztM0_level2_quad_clean.evt
Size (bytes)254,784,96041,578,560
Size243.0 MB 39.7 MB
Events in quadrant A1,827,432244,771
Events in quadrant B1,924,235249,215
Events in quadrant C1,791,655241,920
Events in quadrant D1,890,252231,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083271
B084991
C082981
D085363

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A412560.145455%
B412580.193939%
C412520.048485%
D412420.048497%

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 4125 4125 0 0 0.00% 0.00%
B 4125 4125 1 1 0.02% 0.02%
C 4125 4125 0 0 0.00% 0.00%
D 4125 4125 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 13 251 6833 65.78 471 461 96.9
A 0 226 4352 40.17 471 461 96.9
A 12 194 4232 38.93 471 461 96.9
B 0 214 27959 300.37 477 467 91.5
B 0 230 11280 118.14 477 467 91.5
B 0 213 11139 116.6 477 467 91.5
C 13 61 3516 28.28 459 460 108.1
C 8 222 1775 12.17 459 460 108.1
C 3 202 1142 6.31 459 460 108.1
D 1 52 144948 1238.01 451 440 116.7
D 2 234 12855 106.36 451 440 116.7
D 5 97 11514 94.87 451 440 116.7

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