ASTROSAT CZTI

Data Quality Report

Orbit 19607

Creation date: 2024-06-27T18:04:42.043367
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_115T01_9000002914_19607cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19607cztM0_level2_quad_clean.evt
Size (bytes)1,957,014,720396,478,080
Size1.8 GB 378.1 MB
Events in quadrant A13,745,6752,577,560
Events in quadrant B14,309,8702,532,374
Events in quadrant C14,141,0802,448,450
Events in quadrant D15,119,7722,464,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600115
B0614445
C0602795
D0652435

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288854071.409036%
B288865771.997507%
C288865932.052898%
D288865531.914422%

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 31445 28888 13 13 0.04% 0.05%
B 31446 28886 101 101 0.32% 0.35%
C 31446 28887 4 4 0.01% 0.01%
D 31446 28888 228 228 0.73% 0.79%

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 9 143 166135 232.02 3486 3412 701.3
A 5 16 83292 113.9 3486 3412 701.3
A 11 29 54007 72.14 3486 3412 701.3
B 7 220 325089 493.65 3446 3361 651.7
B 4 216 206224 311.27 3446 3361 651.7
B 0 197 89925 132.82 3446 3361 651.7
C 3 233 603385 772.47 3316 3333 776.8
C 14 238 512605 655.61 3316 3333 776.8
C 5 112 51260 61.7 3316 3333 776.8
D 1 52 1905156 2325.68 3378 3289 817.8
D 7 238 161153 193.04 3378 3289 817.8
D 2 234 123693 147.23 3378 3289 817.8

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