ASTROSAT CZTI

Data Quality Report

Orbit 20190305_A05_167T01_9000002758_level2

Creation date: 2025-11-28T11:21:03.156200
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_167T01_9000002758cztM0_level2.fits modeM0/AS1A05_167T01_9000002758cztM0_level2_quad_clean.evt
Size (bytes)438,747,840360,342,720
Size418.4 MB 343.6 MB
Events in quadrant A2,727,8862,069,400
Events in quadrant B2,633,8002,113,515
Events in quadrant C2,704,2402,027,528
Events in quadrant D2,294,0461,774,140

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08740
B08740
C08740
D08740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0918560
B0924440
C0934230
D01270790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A426216551.536801%
B426216661.562610%
C426217731.813660%
D4262130217.088055%

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 52362 42616 0 0 0.00% 0.00%
B 52362 42613 0 0 0.00% 0.00%
C 52362 42610 0 0 0.00% 0.00%
D 52362 42581 0 0 0.00% 0.00%

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 0 29 2650 11.2 711 668 176.8
A 7 110 2138 8.31 711 668 176.8
A 0 30 2077 7.96 711 668 176.8
B 2 9 2030 9.86 696 665 138.4
B 5 128 1779 8.05 696 665 138.4
B 3 17 1720 7.62 696 665 138.4
C 1 81 2075 7.62 714 670 184.4
C 1 80 2073 7.61 714 670 184.4
C 12 250 1839 6.34 714 670 184.4
D 10 190 1783 6.89 655 600 171.7
D 10 189 1662 6.19 655 600 171.7
D 6 67 1662 6.19 655 600 171.7

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