ASTROSAT CZTI

Data Quality Report

Orbit 29361

Creation date: 2024-06-27T20:03:13.796676
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/AS1T03_279T01_9000004218_29361cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29361cztM0_level2_quad_clean.evt
Size (bytes)719,916,48091,175,040
Size686.6 MB 87.0 MB
Events in quadrant A3,462,319592,422
Events in quadrant B3,429,954596,405
Events in quadrant C6,663,581556,656
Events in quadrant D7,778,471532,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146851
B0145241
C0246011
D0278281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6931861.240802%
B6931941.356226%
C6931119817.284663%
D6931124918.020488%

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 7326 6932 16 16 0.22% 0.23%
B 7326 6932 5 5 0.07% 0.07%
C 7326 6932 426 426 5.81% 6.15%
D 7326 6932 950 950 12.97% 13.70%

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 14 235 139702 812.26 838 821 171.0
A 15 174 67539 390.21 838 821 171.0
A 13 254 13977 76.94 838 821 171.0
B 0 229 34329 211.78 832 811 158.3
B 0 230 22954 139.91 832 811 158.3
B 0 244 19733 119.55 832 811 158.3
C 3 233 3324062 18972.64 749 755 175.2
C 14 238 216384 1231.02 749 755 175.2
C 14 254 144335 819.69 749 755 175.2
D 1 52 2176997 11969.49 751 730 181.8
D 7 80 1261094 6932.02 751 730 181.8
D 13 153 555405 3050.72 751 730 181.8

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