ASTROSAT CZTI

Data Quality Report

Orbit 31590

Creation date: 2024-06-27T20:30:24.100118
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/AS1C06_006T06_9000004608_31590cztM0_level2.evt modeM0/AS1C06_006T06_9000004608_31590cztM0_level2_quad_clean.evt
Size (bytes)1,377,475,20062,000,640
Size1.3 GB 59.1 MB
Events in quadrant A6,258,788259,335
Events in quadrant B17,045,967210,823
Events in quadrant C6,478,606251,015
Events in quadrant D11,041,811239,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027365205
B060361671
C027711205
D042173441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02711
B02711
C02722
D02722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132562001.508751%
B13223327224.744763%
C132543102.338917%
D132349096.868672%

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 15412 13277 0 0 0.00% 0.00%
B 15413 13245 2367 2367 15.36% 17.87%
C 15413 13280 2 2 0.01% 0.02%
D 15413 13257 640 640 4.15% 4.83%

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 23084 66.24 1622 1588 324.5
A 3 137 16238 45.14 1622 1588 324.5
A 0 226 13764 37.52 1622 1588 324.5
B 12 1 6983034 25654.43 1446 1411 272.1
B 6 159 3289198 12081.19 1446 1411 272.1
B 4 80 533207 1954.12 1446 1411 272.1
C 14 238 262883 720.42 1548 1558 362.7
C 4 175 65817 177.15 1548 1558 362.7
C 10 22 37609 99.39 1548 1558 362.7
D 8 195 2697091 7558.65 1516 1478 356.6
D 12 218 972871 2723.84 1516 1478 356.6
D 2 250 573010 1602.61 1516 1478 356.6

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