ASTROSAT CZTI

Data Quality Report

Orbit 13883

Creation date: 2024-06-27T16:47:19.602965
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/AS1A04_010T01_9000002046_13883cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13883cztM0_level2_quad_clean.evt
Size (bytes)842,685,120146,194,560
Size803.6 MB 139.4 MB
Events in quadrant A5,599,985919,996
Events in quadrant B5,731,483933,061
Events in quadrant C5,607,034914,011
Events in quadrant D7,792,506853,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242094
B0245603
C0241433
D0311743

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11667270.231422%
B11667710.608554%
C11667270.231422%
D116674043.462758%

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 13798 11669 2 2 0.01% 0.02%
B 13798 11670 9 9 0.07% 0.08%
C 13798 11670 3 3 0.02% 0.03%
D 13798 11669 359 359 2.60% 3.08%

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 0 23 46402 157.03 1415 1385 286.7
A 15 69 39641 133.45 1415 1385 286.7
A 8 15 34324 114.9 1415 1385 286.7
B 3 209 41981 152.05 1415 1384 267.0
B 0 230 36435 131.28 1415 1384 267.0
B 4 80 35173 126.55 1415 1384 267.0
C 3 233 249310 777.16 1373 1379 319.0
C 13 61 9624 25.84 1373 1379 319.0
C 12 4 8214 21.42 1373 1379 319.0
D 1 52 1490739 4714.54 1339 1311 315.9
D 5 222 627060 1980.71 1339 1311 315.9
D 13 189 122186 382.61 1339 1311 315.9

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