ASTROSAT CZTI

Data Quality Report

Orbit 46236

Creation date: 2024-06-27T23:20:39.643879
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/AS1A13_065T07_9000006188_46236cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46236cztM0_level2_quad_clean.evt
Size (bytes)775,169,280160,073,280
Size739.3 MB 152.7 MB
Events in quadrant A9,007,9641,067,062
Events in quadrant B5,377,6691,105,810
Events in quadrant C4,582,9931,061,378
Events in quadrant D8,927,610898,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326281
B0225801
C0214691
D0337091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103101891.833172%
B103111681.629328%
C103111371.328678%
D10311105110.192998%

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 10660 10310 4 4 0.04% 0.04%
B 10661 10311 22 22 0.21% 0.21%
C 10661 10311 34 34 0.32% 0.33%
D 10661 10311 761 761 7.14% 7.38%

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 10 83 4366918 18608.61 1131 1106 234.6
A 0 247 102814 433.51 1131 1106 234.6
A 7 3 84536 355.61 1131 1106 234.6
B 3 112 808251 3662.96 1124 1088 220.4
B 5 32 40795 180.19 1124 1088 220.4
B 12 111 28838 125.93 1124 1088 220.4
C 12 2 178759 678.98 1113 1116 261.6
C 1 3 56759 212.68 1113 1116 261.6
C 13 61 7604 24.8 1113 1116 261.6
D 1 52 2618243 9677.91 1072 1036 270.4
D 5 235 1070246 3953.73 1072 1036 270.4
D 5 33 462281 1705.59 1072 1036 270.4

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