ASTROSAT CZTI

Data Quality Report

Orbit 06550

Creation date: 2024-06-27T15:08:41.581953
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/AS1G05_246T04_9000000882_06550cztM0_level2.evt modeM0/AS1G05_246T04_9000000882_06550cztM0_level2_quad_clean.evt
Size (bytes)857,053,440161,850,240
Size817.3 MB 154.4 MB
Events in quadrant A6,223,031991,263
Events in quadrant B6,211,434993,807
Events in quadrant C5,624,767996,293
Events in quadrant D7,017,4231,024,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299112692
B0303223179
C0289182632
D0327032847

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029228
B029224
C029224
D029232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129621651.272952%
B129101821.409760%
C129631160.894855%
D129611711.319343%

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 15172 13732 43 43 0.28% 0.31%
B 15172 13680 26 26 0.17% 0.19%
C 15172 13740 0 0 0.00% 0.00%
D 15172 13735 40 40 0.26% 0.29%

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 9 1 217249 721.68 1470 1439 299.0
A 8 15 171304 568.04 1470 1439 299.0
A 15 236 107301 354.01 1470 1439 299.0
B 8 3 181254 633.82 1479 1442 283.7
B 0 219 99244 344.74 1479 1442 283.7
B 4 48 61486 211.65 1479 1442 283.7
C 9 237 15164 41.33 1432 1439 332.1
C 13 61 11227 29.47 1432 1439 332.1
C 9 54 8341 20.78 1432 1439 332.1
D 2 63 1078833 3052.86 1429 1384 352.9
D 14 34 197228 554.91 1429 1384 352.9
D 2 33 76153 211.85 1429 1384 352.9

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