ASTROSAT CZTI

Data Quality Report

Orbit 27891

Creation date: 2024-06-27T19:45:39.393774
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/AS1A10_048T01_9000004028_27891cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27891cztM0_level2_quad_clean.evt
Size (bytes)522,702,72092,992,320
Size498.5 MB 88.7 MB
Events in quadrant A3,377,955614,012
Events in quadrant B3,535,729617,596
Events in quadrant C3,385,654579,464
Events in quadrant D5,107,239568,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141080
B0146550
C0142780
D0195730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247811.296622%
B6248811.296415%
C62481121.792574%
D62482193.505122%

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 7472 6247 8 8 0.11% 0.13%
B 7473 6248 1 1 0.01% 0.02%
C 7473 6248 0 0 0.00% 0.00%
D 7473 6248 146 146 1.95% 2.34%

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 4 2 25593 144.16 869 853 171.6
A 13 254 8977 47.34 869 853 171.6
A 3 137 7562 39.09 869 853 171.6
B 10 245 89562 552.43 858 840 160.6
B 0 230 80307 494.8 858 840 160.6
B 12 111 18806 111.86 858 840 160.6
C 14 238 133739 706.83 815 821 188.0
C 3 233 41549 216.58 815 821 188.0
C 2 16 23590 121.08 815 821 188.0
D 1 52 982154 5080.62 822 801 193.2
D 13 104 804260 4159.64 822 801 193.2
D 7 238 209929 1082.69 822 801 193.2

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