ASTROSAT CZTI

Data Quality Report

Orbit 34601

Creation date: 2022-02-21T00:54:44.915218
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/AS1C07_014T01_9000004950_34601cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34601cztM0_level2_quad_clean.evt
Size (bytes)573,995,52075,355,200
Size547.4 MB 71.9 MB
Events in quadrant A3,079,627490,457
Events in quadrant B4,178,409488,377
Events in quadrant C2,987,203485,357
Events in quadrant D6,750,968417,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128592
B0161301
C0122241
D0242481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57251152.008734%
B57253776.585153%
C5725390.681223%
D572578313.676856%

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 7038 5726 87 87 1.24% 1.52%
B 7038 5726 233 233 3.31% 4.07%
C 7038 5726 23 23 0.33% 0.40%
D 7038 5726 752 752 10.68% 13.13%

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 15 169 379289 2752.85 679 668 137.5
A 10 83 35053 250.0 679 668 137.5
A 9 143 21511 151.54 679 668 137.5
B 5 172 1068411 8333.46 665 650 128.1
B 4 171 137320 1066.66 665 650 128.1
B 0 189 110884 860.33 665 650 128.1
C 15 214 237920 1522.23 664 670 155.9
C 0 10 92256 587.63 664 670 155.9
C 0 207 39683 250.31 664 670 155.9
D 8 195 2626390 15678.63 630 616 167.5
D 13 249 475402 2834.97 630 616 167.5
D 14 52 455377 2715.4 630 616 167.5

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