ASTROSAT CZTI

Data Quality Report

Orbit 20470

Creation date: 2024-06-27T18:15:45.172268
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/AS1A05_198T01_9000003024_20470cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20470cztM0_level2_quad_clean.evt
Size (bytes)1,631,548,800322,632,000
Size1.5 GB 307.7 MB
Events in quadrant A10,730,4792,117,411
Events in quadrant B11,258,1182,167,925
Events in quadrant C11,857,6072,071,464
Events in quadrant D14,148,5921,969,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450305
B0466195
C0484445
D0558705

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209971720.819165%
B209973011.433538%
C209984502.143061%
D2099810995.233832%

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 27382 21001 0 0 0.00% 0.00%
B 27382 21000 16 16 0.06% 0.08%
C 27383 21002 61 61 0.22% 0.29%
D 27383 21003 815 815 2.98% 3.88%

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 12 16 38930 65.68 2774 2724 551.3
A 12 194 26467 43.07 2774 2724 551.3
A 13 254 25219 40.81 2774 2724 551.3
B 0 189 217982 413.77 2777 2715 520.3
B 12 111 61592 113.17 2777 2715 520.3
B 11 111 55003 100.5 2777 2715 520.3
C 3 9 823256 1320.4 2698 2725 621.4
C 14 238 427736 683.93 2698 2725 621.4
C 3 233 44064 66.52 2698 2725 621.4
D 1 52 2205213 3413.19 2680 2617 645.3
D 15 0 1539987 2382.34 2680 2617 645.3
D 7 238 113173 171.32 2680 2617 645.3

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