ASTROSAT CZTI

Data Quality Report

Orbit 20201002_T03_244T01_9000003912_level2

Creation date: 2025-12-15T12:43:30.534952
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_244T01_9000003912cztM0_level2.fits modeM0/AS1T03_244T01_9000003912cztM0_level2_quad_clean.evt
Size (bytes)1,834,007,0401,386,221,760
Size1.7 GB 1.3 GB
Events in quadrant A11,468,6847,764,264
Events in quadrant B10,915,1967,764,195
Events in quadrant C11,173,5007,442,030
Events in quadrant D9,337,1886,365,516

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037660
B037660
C037660
D037660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04310990
B04180390
C03887090
D05901200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18450236321.968542%
B18450242702.314338%
C18450229681.608655%
D184502181779.851926%

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 215637 184501 0 0 0.00% 0.00%
B 215637 184488 0 0 0.00% 0.00%
C 215637 184502 0 0 0.00% 0.00%
D 215637 184264 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 9453 9.24 2987 2807 718.9
A 7 110 9019 8.64 2987 2807 718.9
A 9 19 8631 8.1 2987 2807 718.9
B 2 9 8685 10.71 2892 2768 552.3
B 2 8 7218 8.06 2892 2768 552.3
B 3 17 7129 7.9 2892 2768 552.3
C 12 241 7867 6.91 2954 2776 736.7
C 9 209 7601 6.55 2954 2776 736.7
C 3 187 7486 6.39 2954 2776 736.7
D 10 189 6775 6.25 2667 2437 694.4
D 6 67 6560 5.94 2667 2437 694.4
D 6 231 6499 5.85 2667 2437 694.4

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