ASTROSAT CZTI

Data Quality Report

Orbit 20190318_A05_115T03_9000002806_level2

Creation date: 2019-03-20T10:19:42.247650
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_115T03_9000002806cztM0_level2_bc.evt modeM0/AS1A05_115T03_9000002806cztM0_level2_quad_clean.evt
Size (bytes)1,960,606,080781,706,880
Size1.8 GB 745.5 MB
Events in quadrant A14,053,3614,923,613
Events in quadrant B12,702,7435,006,382
Events in quadrant C12,772,7464,835,733
Events in quadrant D15,710,4124,751,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012340
B012340
C012340
D012340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01307310
B01267560
C01281640
D01352800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A606589201.516700%
B606588791.449108%
C6065810451.722774%
D6065810721.767285%

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 69208 60660 166 166 0.24% 0.27%
B 69208 60659 0 0 0.00% 0.00%
C 69208 60658 1 1 0.00% 0.00%
D 69208 60658 98 98 0.14% 0.16%

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 15 192 1005296 1466.73 3162 3100 683.3
A 6 16 710458 1035.23 3162 3100 683.3
A 13 254 81497 114.73 3162 3100 683.3
B 0 229 169560 277.16 3193 3109 600.6
B 10 245 157134 256.47 3193 3109 600.6
B 4 216 40859 62.86 3193 3109 600.6
C 3 233 847394 1178.16 3071 3056 716.7
C 6 96 53171 69.93 3071 3056 716.7
C 8 128 26195 32.29 3071 3056 716.7
D 7 238 1454242 2013.92 3137 3026 720.6
D 1 52 838621 1159.59 3137 3026 720.6
D 7 223 655831 905.93 3137 3026 720.6

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