ASTROSAT CZTI

Data Quality Report

Orbit 26323

Creation date: 2024-06-27T19:27:27.971499
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/AS1A09_008T02_9000003796_26323cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26323cztM0_level2_quad_clean.evt
Size (bytes)1,109,295,360187,139,520
Size1.0 GB 178.5 MB
Events in quadrant A6,073,3681,214,012
Events in quadrant B6,144,5841,237,680
Events in quadrant C9,390,8741,169,576
Events in quadrant D11,106,4291,146,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266220
B0267280
C0363240
D0418470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130262541.949946%
B130272862.195440%
C1302612469.565484%
D13026164212.605558%

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 14711 13029 0 0 0.00% 0.00%
B 14712 13030 1 1 0.01% 0.01%
C 14711 13029 542 542 3.68% 4.16%
D 14711 13029 1180 1180 8.02% 9.06%

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 13 254 20349 59.51 1573 1534 316.2
A 3 137 14967 42.49 1573 1534 316.2
A 0 226 13296 37.2 1573 1534 316.2
B 12 111 37280 120.44 1559 1516 296.9
B 11 111 33810 108.76 1559 1516 296.9
B 14 111 29525 94.33 1559 1516 296.9
C 4 254 2046898 5994.53 1469 1479 341.2
C 3 233 724373 2118.59 1469 1479 341.2
C 2 16 655102 1915.58 1469 1479 341.2
D 1 52 3282212 9494.43 1464 1424 345.5
D 12 233 2021623 5846.35 1464 1424 345.5
D 11 176 214762 617.39 1464 1424 345.5

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