ASTROSAT CZTI

Data Quality Report

Orbit 28387

Creation date: 2024-06-27T19:51:13.621818
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/AS1A10_045T05_9000004086_28387cztM0_level2.evt modeM0/AS1A10_045T05_9000004086_28387cztM0_level2_quad_clean.evt
Size (bytes)1,336,340,160267,042,240
Size1.2 GB 254.7 MB
Events in quadrant A8,122,9881,767,286
Events in quadrant B9,282,2431,817,109
Events in quadrant C8,349,1521,766,611
Events in quadrant D13,651,3931,647,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341940
B0379140
C0348040
D0514810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158011641.037909%
B158002841.797468%
C158003121.974684%
D1580112187.708373%

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 19716 15803 0 0 0.00% 0.00%
B 19715 15802 29 29 0.15% 0.18%
C 19715 15802 2 2 0.01% 0.01%
D 19716 15804 979 979 4.97% 6.19%

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 15 174 44472 102.87 2091 2054 412.4
A 13 254 24163 53.62 2091 2054 412.4
A 3 137 19534 42.39 2091 2054 412.4
B 10 245 855157 2200.3 2092 2045 387.7
B 15 222 137317 348.89 2092 2045 387.7
B 0 230 84329 212.22 2092 2045 387.7
C 14 238 334030 702.62 2049 2068 472.5
C 7 220 21446 41.01 2049 2068 472.5
C 13 61 14023 25.3 2049 2068 472.5
D 1 52 5177642 11117.78 1989 1943 465.5
D 8 195 666304 1427.1 1989 1943 465.5
D 7 238 144215 305.61 1989 1943 465.5

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