ASTROSAT CZTI

Data Quality Report

Orbit 20210429_A10_071T15_9000004346_level2

Creation date: 2021-05-08T11:17:35.403101
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_071T15_9000004346cztM0_level2_bc.evt modeM0/AS1A10_071T15_9000004346cztM0_level2_quad_clean.evt
Size (bytes)2,536,980,480666,334,080
Size2.4 GB 635.5 MB
Events in quadrant A11,819,4634,222,140
Events in quadrant B26,448,4704,256,547
Events in quadrant C14,265,9484,051,443
Events in quadrant D20,593,4183,914,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011120
B011120
C011120
D011120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140860
B01651340
C01232000
D01408490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544677421.362293%
B5446812842.357347%
C5446819953.662701%
D5446818393.376294%

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 68811 54467 0 0 0.00% 0.00%
B 68811 54468 1 1 0.00% 0.00%
C 68811 54469 441 441 0.64% 0.81%
D 68811 54469 331 331 0.48% 0.61%

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 8 192 116256 175.02 3025 2970 647.3
A 13 254 89513 133.7 3025 2970 647.3
A 0 226 18857 24.54 3025 2970 647.3
B 6 159 14670114 25370.04 3057 2984 578.1
B 0 190 93248 156.13 3057 2984 578.1
B 0 214 24045 36.43 3057 2984 578.1
C 3 233 2916597 4312.66 2899 2887 675.6
C 2 114 102973 148.14 2899 2887 675.6
C 10 22 47055 65.37 2899 2887 675.6
D 7 223 2481466 3711.03 2902 2828 667.9
D 1 52 2166662 3239.7 2902 2828 667.9
D 8 195 2057281 3075.94 2902 2828 667.9

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