ASTROSAT CZTI

Data Quality Report

Orbit 26766

Creation date: 2024-06-27T19:32:36.218556
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_044T02_9000003852_26766cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26766cztM0_level2_quad_clean.evt
Size (bytes)90,613,44016,168,320
Size86.4 MB 15.4 MB
Events in quadrant A458,849117,560
Events in quadrant B469,778120,120
Events in quadrant C441,419112,364
Events in quadrant D1,319,08177,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017880
B018120
C017530
D044530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A764111.439791%
B765141.830065%
C76510.130719%
D76543056.209150%

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 764 764 6 6 0.79% 0.79%
B 765 765 10 10 1.31% 1.31%
C 765 765 0 0 0.00% 0.00%
D 765 765 348 348 45.49% 45.49%

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 13 46245 1993.27 106 104 23.1
A 13 254 1133 44.45 106 104 23.1
A 0 226 991 38.32 106 104 23.1
B 0 189 53275 2458.64 104 102 21.6
B 0 190 6089 276.83 104 102 21.6
B 12 111 2235 98.63 104 102 21.6
C 10 22 23525 924.73 100 100 25.3
C 14 238 16341 641.13 100 100 25.3
C 2 16 9630 376.21 100 100 25.3
D 7 80 986464 47436.71 76 74 20.8
D 1 52 32798 1573.74 76 74 20.8
D 15 20 2790 130.62 76 74 20.8

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