ASTROSAT CZTI

Data Quality Report

Orbit 25688

Creation date: 2024-06-27T19:20:26.253293
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/AS1A09_008T03_9000003746_25688cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25688cztM0_level2_quad_clean.evt
Size (bytes)302,097,60040,541,760
Size288.1 MB 38.7 MB
Events in quadrant A2,752,004249,831
Events in quadrant B1,906,182252,116
Events in quadrant C1,874,561233,610
Events in quadrant D2,364,010230,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105230
B079710
C078770
D093950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36893369.108159%
B3688381.030369%
C3688541.464208%
D3688441.193059%

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 4759 3689 277 277 5.82% 7.51%
B 4758 3688 0 0 0.00% 0.00%
C 4758 3689 0 0 0.00% 0.00%
D 4758 3689 21 21 0.44% 0.57%

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 13 954539 10089.0 464 454 94.6
A 13 254 5091 49.03 464 454 94.6
A 4 2 4373 41.44 464 454 94.6
B 0 245 14085 146.91 478 467 92.7
B 12 111 11017 113.81 478 467 92.7
B 11 111 9985 102.67 478 467 92.7
C 14 238 72852 674.76 454 457 107.3
C 3 233 28279 259.32 454 457 107.3
C 13 61 3199 25.56 454 457 107.3
D 1 52 383705 3390.88 461 446 113.0
D 8 195 161697 1426.67 461 446 113.0
D 2 244 25804 224.35 461 446 113.0

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