ASTROSAT CZTI

Data Quality Report

Orbit 27477

Creation date: 2024-06-27T19:40:28.577343
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_249T01_9000003934_27477cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27477cztM0_level2_quad_clean.evt
Size (bytes)529,741,44091,324,800
Size505.2 MB 87.1 MB
Events in quadrant A3,531,564576,451
Events in quadrant B3,657,669581,676
Events in quadrant C3,550,894555,402
Events in quadrant D4,808,426544,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150680
B0153380
C0150540
D0191420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72851842.525738%
B72862082.854790%
C72862463.376338%
D72862753.774362%

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 7530 7285 0 0 0.00% 0.00%
B 7531 7286 1 1 0.01% 0.01%
C 7531 7286 0 0 0.00% 0.00%
D 7531 7286 76 76 1.01% 1.04%

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 12656 63.45 914 894 185.4
A 3 137 8827 42.79 914 894 185.4
A 0 226 7883 37.7 914 894 185.4
B 3 64 78303 441.17 901 877 175.5
B 15 32 22194 121.46 901 877 175.5
B 12 111 21781 119.11 901 877 175.5
C 14 238 137307 660.2 872 876 206.6
C 15 208 8604 37.4 872 876 206.6
C 2 16 7860 33.8 872 876 206.6
D 1 52 1126529 5323.79 883 858 211.4
D 2 250 139590 656.12 883 858 211.4
D 14 35 125671 590.29 883 858 211.4

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