ASTROSAT CZTI

Data Quality Report

Orbit 21590

Creation date: 2024-06-27T18:29:56.349815
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/AS1A06_002T02_9000003204_21590cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21590cztM0_level2_quad_clean.evt
Size (bytes)688,066,560129,438,720
Size656.2 MB 123.4 MB
Events in quadrant A5,222,547822,886
Events in quadrant B4,763,017827,555
Events in quadrant C4,550,437808,588
Events in quadrant D5,648,676792,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221890
B0204190
C0197700
D0233620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96371571.629138%
B96371111.151811%
C96371151.193317%
D96384254.409629%

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 11157 9639 53 53 0.48% 0.55%
B 11157 9639 19 19 0.17% 0.20%
C 11157 9639 0 0 0.00% 0.00%
D 11158 9640 227 227 2.03% 2.35%

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 15 236 744968 3179.91 1161 1135 233.9
A 13 254 13243 51.76 1161 1135 233.9
A 0 226 9987 37.84 1161 1135 233.9
B 3 64 125354 553.58 1160 1131 224.4
B 0 230 37437 161.79 1160 1131 224.4
B 0 229 31124 133.66 1160 1131 224.4
C 14 238 172171 649.68 1120 1127 263.3
C 3 233 9759 32.79 1120 1127 263.3
C 13 61 7788 25.3 1120 1127 263.3
D 1 52 1128446 4175.35 1113 1080 270.0
D 2 136 178401 656.73 1113 1080 270.0
D 2 234 37965 136.61 1113 1080 270.0

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