ASTROSAT CZTI

Data Quality Report

Orbit 22650

Creation date: 2024-06-27T18:44:01.669217
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/AS1A08_007T01_9000003362_22650cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22650cztM0_level2_quad_clean.evt
Size (bytes)1,547,916,480314,274,240
Size1.4 GB 299.7 MB
Events in quadrant A10,552,0862,013,934
Events in quadrant B11,249,0672,040,153
Events in quadrant C10,939,8871,970,018
Events in quadrant D12,597,0821,926,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463745
B0481175
C0470335
D0526547

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22800650.285088%
B22800920.403509%
C228002000.877193%
D227992961.298303%

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 26075 22804 0 0 0.00% 0.00%
B 26075 22804 2 2 0.01% 0.01%
C 26075 22804 7 7 0.03% 0.03%
D 26074 22803 205 205 0.79% 0.90%

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 13 254 38992 66.77 2728 2662 544.1
A 0 226 23820 38.89 2728 2662 544.1
A 3 137 22514 36.49 2728 2662 544.1
B 0 190 209454 408.86 2719 2656 505.8
B 0 219 108995 210.24 2719 2656 505.8
B 0 230 98600 189.69 2719 2656 505.8
C 14 238 414317 668.37 2646 2662 615.9
C 10 22 132786 211.27 2646 2662 615.9
C 10 23 62812 97.66 2646 2662 615.9
D 1 52 1743846 2682.1 2673 2594 649.2
D 7 238 273291 416.96 2673 2594 649.2
D 2 234 98858 148.28 2673 2594 649.2

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