ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T29_9000003954_level2

Creation date: 2021-01-07T16:07:11.321052
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/AS1A09_038T29_9000003954cztM0_level2_bc.evt modeM0/AS1A09_038T29_9000003954cztM0_level2_quad_clean.evt
Size (bytes)754,087,680296,193,600
Size719.2 MB 282.5 MB
Events in quadrant A4,201,4621,977,228
Events in quadrant B5,377,9451,989,179
Events in quadrant C4,209,2021,978,380
Events in quadrant D7,856,9951,826,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365320
B0427330
C0376600
D0521880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17411830.476710%
B174117274.175521%
C174112181.252082%
D1741012156.978748%

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 21437 17412 37 37 0.17% 0.21%
B 21437 17411 14 14 0.07% 0.08%
C 21437 17412 0 0 0.00% 0.00%
D 21437 17410 74 74 0.35% 0.43%

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 6 16 118440 525.52 1059 1047 223.4
A 13 254 26505 113.97 1059 1047 223.4
A 0 226 6631 25.0 1059 1047 223.4
B 10 245 1045668 5374.92 1066 1048 194.4
B 4 52 75628 383.74 1066 1048 194.4
B 15 32 66676 337.68 1066 1048 194.4
C 2 16 150938 612.1 1053 1055 244.9
C 8 208 9049 32.65 1053 1055 244.9
C 13 61 5977 20.1 1053 1055 244.9
D 1 52 3669819 16067.43 1026 999 228.3
D 2 250 86327 373.69 1026 999 228.3
D 6 112 73421 317.17 1026 999 228.3

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