ASTROSAT CZTI

Data Quality Report

Orbit 04677

Creation date: 2024-06-27T14:45:32.037045
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/AS1G05_251T02_9000000588_04677cztM0_level2.evt modeM0/AS1G05_251T02_9000000588_04677cztM0_level2_quad_clean.evt
Size (bytes)279,930,24043,646,400
Size267.0 MB 41.6 MB
Events in quadrant A1,417,451295,356
Events in quadrant B1,376,789298,204
Events in quadrant C1,322,092298,594
Events in quadrant D4,169,875229,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0664
B0655
C0677
D06612

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06994730
B06694634
C06523614
D0158241457

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2795742.647585%
B2788471.685796%
C2796351.251788%
D2765116742.206148%

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 7854 2898 39 39 0.50% 1.35%
B 7853 2896 5 5 0.06% 0.17%
C 7854 2910 5 5 0.06% 0.17%
D 7854 2876 1037 1037 13.20% 36.06%

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 14 111 164985 2498.06 316 308 65.9
A 7 16 14075 208.84 316 308 65.9
A 0 50 10146 149.24 316 308 65.9
B 15 204 49728 775.5 326 318 63.7
B 14 167 25093 388.85 326 318 63.7
B 0 182 14288 219.26 326 318 63.7
C 14 48 56577 739.72 320 320 76.1
C 8 128 6889 86.37 320 320 76.1
C 14 67 3096 36.5 320 320 76.1
D 8 112 2742767 42011.42 265 256 65.3
D 2 234 169991 2600.1 265 256 65.3
D 2 136 63534 969.33 265 256 65.3

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